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Corporation","holder_sec_code":"3865","doc_id":"S100YITB","period_end":"2026-03-31","holder_table":"reporting","shares":221000,"book_value_yen":193000000,"prior_shares":221000,"prior_book_value_yen":144000000,"purpose_ja":"製品販売に関わる取引関係強化のため","reciprocal":"有","pct_outstanding":0.3439994755019762,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.07636094592616331,"pct_of_holder_assets":0.045889665076776026,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":252747000000,"holder_total_assets_yen":420574000000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"ダイナパック株式会社","holder_name_en":"Dynapac　Co.,Ltd.","holder_sec_code":"3947","doc_id":"S100XT1X","period_end":"2025-12-31","holder_table":"reporting","shares":143000,"book_value_yen":117832000,"prior_shares":143000,"prior_book_value_yen":92235000,"purpose_ja":"当社の主要な仕入先であり、継続的な取引関係の維持強化のため保有しております。配当利回り等と当社の資本コストを比較のうえ、保有の合理性を検証しております。","reciprocal":"有","pct_outstanding":0.2225878959130434,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.24630139776962956,"pct_of_holder_assets":0.13883016031742423,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":47840573000,"holder_total_assets_yen":84874929000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"ナカバヤシ株式会社","holder_name_en":"ＮＡＫＡＢＡＹＡＳＨＩ ＣＯ.,ＬＴＤ．","holder_sec_code":"7987","doc_id":"S100YKAO","period_end":"2026-03-31","holder_table":"reporting","shares":129000,"book_value_yen":113000000,"prior_shares":129000,"prior_book_value_yen":84000000,"purpose_ja":"（保有目的）コンシューマーコミュニケーション事業の製品製造（アルバム等）及びビジネスプロセスソリューション事業の製品製造（手帳等）に不可欠な紙原料の主要調達先として、安定的かつ適正価格での材料調達体制を確保するため継続して保有しています。（定量的な保有効果）（注２）","reciprocal":"有","pct_outstanding":0.20079607393554266,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.3651050080775444,"pct_of_holder_assets":0.20894970414201183,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":30950000000,"holder_total_assets_yen":54080000000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"コクヨ株式会社","holder_name_en":"KOKUYO CO., LTD.","holder_sec_code":"7984","doc_id":"S100XUE1","period_end":"2025-12-31","holder_table":"reporting","shares":110000,"book_value_yen":90000000,"prior_shares":110000,"prior_book_value_yen":70000000,"purpose_ja":"製品及び原材料仕入における協力関係の維持強化を目的として保有しております。","reciprocal":"有","pct_outstanding":0.17122145839464878,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.0352309782076827,"pct_of_holder_assets":0.025348685248191793,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":255457000000,"holder_total_assets_yen":355048000000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"笹徳印刷株式会社","holder_name_en":"Sasatoku Printing Co., Ltd.","holder_sec_code":"3958","doc_id":"S100Z33V","period_end":"2026-06-30","holder_table":"reporting","shares":77000,"book_value_yen":79156000,"prior_shares":77000,"prior_book_value_yen":57211000,"purpose_ja":"(保有目的)原材料の取引を行っており、事業上の関係強化を図るため、継続して保有しております。(定量的な保有効果)(注)２","reciprocal":"有","pct_outstanding":0.11985502087625415,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.8214905992379345,"pct_of_holder_assets":0.5111408308705402,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":9635655000,"holder_total_assets_yen":15486143000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"光村印刷株式会社","holder_name_en":"MITSUMURA PRINTING CO., LTD.","holder_sec_code":"7916","doc_id":"S100YL1G","period_end":"2026-03-31","holder_table":"reporting","shares":69300,"book_value_yen":60776000,"prior_shares":69300,"prior_book_value_yen":45322000,"purpose_ja":"印刷事業における原材料等の仕入先であり、取引・協力関係の維持強化のため保有しています。定量的な保有効果の記載については困難ですが、将来的な投資目的の実現見通しを踏まえた保有意義についての確認を行った結果、保有の合理性はあると判断しています。","reciprocal":"有","pct_outstanding":0.10786951878862873,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.32803672266831124,"pct_of_holder_assets":0.22643758676161277,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":18527194000,"holder_total_assets_yen":26840067000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"株式会社岡山製紙","holder_name_en":"Okayama Paper Industries Co.,Ltd.","holder_sec_code":"3892","doc_id":"S100YYF7","period_end":"2026-05-31","holder_table":"reporting","shares":55000,"book_value_yen":55550000,"prior_shares":55000,"prior_book_value_yen":39710000,"purpose_ja":"（保有目的）板紙製品の販売先であり、取引関係を維持・強化するために保有しております。（定量的な保有効果）（注１）","reciprocal":"無","pct_outstanding":0.08561072919732439,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.3835958265878934,"pct_of_holder_assets":0.2999653271401338,"holder_equity_basis":"parent_only","holder_equity_yen":14481388000,"holder_total_assets_yen":18518807000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"セキ株式会社","holder_name_en":"ＳＥＫＩ ＣＯ.,ＬＴＤ.","holder_sec_code":"7857","doc_id":"S100YA1Y","period_end":"2026-03-31","holder_table":"reporting","shares":45000,"book_value_yen":39000000,"prior_shares":45000,"prior_book_value_yen":29000000,"purpose_ja":"（保有目的）企業間取引の強化（定量的な保有効果）（注）","reciprocal":"有","pct_outstanding":0.07004514207053814,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.23686514447407284,"pct_of_holder_assets":0.2010239748924148,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":16465065000,"holder_total_assets_yen":19400671000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"平和紙業株式会社","holder_name_en":"HEIWA PAPER CO.,LTD.","holder_sec_code":"9929","doc_id":"S100YGD5","period_end":"2026-03-31","holder_table":"reporting","shares":33620,"book_value_yen":29484000,"prior_shares":33620,"prior_book_value_yen":21987000,"purpose_ja":"同社グループとの間で当社取り扱い商品等の取引を行っており、事業上の関係を勘案し、良好な関係の維持、強化を図るため、継続して保有しています。取引関係を通じて、有機的一体として機能する当社経営資源の一部であるため、定量的な保有効果の把握は困難であるものの、前記a．に記載の方法により保有の合理性を総合的に検証しています。","reciprocal":"有","pct_outstanding":0.05233150392025538,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.28774228971385724,"pct_of_holder_assets":0.16587845706705015,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":10246669000,"holder_total_assets_yen":17774460000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"スーパーバッグ株式会社","holder_name_en":"Superbag Company, Limited","holder_sec_code":"3945","doc_id":"S100YJ4G","period_end":"2026-03-31","holder_table":"reporting","shares":null,"book_value_yen":17000000,"prior_shares":null,"prior_book_value_yen":13000000,"purpose_ja":"取引関係の維持・強化及び収益機会の獲得を期待し保有しております。","reciprocal":"有","pct_outstanding":null,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.3058103975535168,"pct_of_holder_assets":0.12353753360947606,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":5559000000,"holder_total_assets_yen":13761000000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"ＮＩＳＳＨＡ株式会社","holder_name_en":"Nissha Co., Ltd.","holder_sec_code":"7915","doc_id":"S100XS06","period_end":"2025-12-31","holder_table":"reporting","shares":11000,"book_value_yen":9000000,"prior_shares":11000,"prior_book_value_yen":7000000,"purpose_ja":"資材等の仕入先であり、当社との良好な取引関係を維持・発展させるため","reciprocal":"有","pct_outstanding":0.017122145839464878,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.007804641159943113,"pct_of_holder_assets":0.00359827282904206,"holder_equity_basis":"ifrs_consolidated_excl_nci","holder_equity_yen":115316000000,"holder_total_assets_yen":250120000000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"日本紙パルプ商事株式会社","holder_name_en":"Japan Pulp & Paper Co., Ltd.","holder_sec_code":"8032","doc_id":"S100YF3W","period_end":"2026-03-31","holder_table":"reporting","shares":100,"book_value_yen":0,"prior_shares":100,"prior_book_value_yen":0,"purpose_ja":"同社は当社グループの国内卸売事業並びに環境原材料事業における顧客の１社であり、業界動向等の情報収集を目的に保有しております。","reciprocal":"無","pct_outstanding":0.00015565587126786253,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.0,"pct_of_holder_assets":0.0,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":140907000000,"holder_total_assets_yen":394704000000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"株式会社共同紙販ホールディングス","holder_name_en":"KYODO PAPER HOLDINGS","holder_sec_code":"9849","doc_id":"S100YM2W","period_end":"2026-03-31","holder_table":"reporting","shares":null,"book_value_yen":null,"prior_shares":100500,"prior_book_value_yen":65727000,"purpose_ja":"同社は当社の洋紙卸売事業における仕入先であります。同社との良好な取引関係維持・強化を図る観点から、継続して株式を保有するものでありましたが、当事業年度に売却を実施しております。","reciprocal":"無（注）２","pct_outstanding":null,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":null,"pct_of_holder_assets":null,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":3974064000,"holder_total_assets_yen":9530322000,"implausible":false,"reciprocal_held_both_ways":false}],"reclassified":[],"reclassified_note":"As filed, from the annual report's 保有目的を変更した投資株式 table. direction=to_pure means the filer moved the holding from a policy shareholding to 純投資目的 (pure investment); the shares are not necessarily sold, and the position leaves the named policy table in the year of the change. direction=to_policy is the reverse. fy_of_change_ja is the fiscal year the filer states the change took effect, verbatim — some filers list more than one. A filing repeats these rows for several years after the change, so this is a standing disclosure, not a one-year event.","implausible_note":"A row is flagged implausible when its two filed numbers are mutually impossible — book value ÷ shares of ¥1,000,000 or more, which no listed Japanese share reaches. It is a filer tagging error (a value entered at the wrong scale, or a share count in thousands), not an extraction error: the values match the filing's XBRL exactly. Flagged rows are still returned, exactly as filed, but are excluded from the yen aggregates here and counted in excluded_positions / excluded_yen so the exclusion is visible.","notes":[{"holder_table":"reporting","note_no":"1","text_ja":"(注)１．定量的な保有効果については記載が困難でありますが、資本コストを考慮しリターン・リスクを踏まえた経済合理性・採算性等の定量的観点、また、良好な取引関係の維持・強化等の定性的観点を踏まえ、保有の合理性を検証しております。"},{"holder_table":"reporting","note_no":"2","text_ja":"２．当社の株式の保有の有無については、対象先のグループ会社が保有する場合も「有」としております。"}],"notes_note":"The filing's own numbered footnotes to the named policy table, verbatim. The XBRL numbers them (注)1, (注)2 … and gives no link back to a row, so a note is tied to a position only where it names that issuer.","flows":[{"holder_table":"reporting","share_class":"listed","issues_increased":13,"acquisition_cost_yen":136000000,"issues_decreased":2,"sale_proceeds_yen":2492000000,"entity_scope":"parent_only","share_scope":"listed"},{"holder_table":"reporting","share_class":"unlisted","issues_increased":null,"acquisition_cost_yen":null,"issues_decreased":null,"sale_proceeds_yen":null,"entity_scope":"parent_only","share_scope":"unlisted"}],"flows_note":"The filer's own tally, as filed, of how many issues increased or decreased during the year and the yen involved — acquisition cost for increases, sale proceeds for decreases. Read against the reclassification table this separates what was actually sold from what merely changed category. Counts are as filed and are not corrected for filer tagging errors.","no_reduction_measure":"This product holds sale proceeds (売却価額), as filed, for one fiscal year. It does NOT hold a book-value-reduction measure. The two are different measures and must never be presented as equivalent.","scale":{"policy_total_yen":15691000000,"listed_yen":15691000000,"unlisted_yen":null,"listed_issues":34,"unlisted_issues":null,"equity_yen":89454000000,"equity_basis":"jgaap_consolidated","total_assets_yen":374708000000,"assets_basis":"jgaap_consolidated","pct_of_equity":17.540858988977575,"pct_of_assets":4.187527354633475,"equity_basis_label":"Consolidated net assets (Japanese GAAP)","assets_basis_label":"Consolidated net assets (Japanese GAAP)","equity_calc":"total policy shareholdings ÷ shareholders' equity × 100, both as filed in this annual securities report","assets_calc":"total policy shareholdings ÷ total assets × 100, both as filed in this annual securities report"},"scale_entities":[{"holder_table":"reporting","share_class":"listed","book_value_yen":15691000000,"issue_count":34,"holder_table_label":"The filer itself","entity_scope":"parent_only","share_scope":"listed"}],"scale_history":[{"year":"2020","period_end":"2020-03-31","policy_total_yen":15467000000,"equity_yen":47277000000,"equity_basis":"jgaap_consolidated","pct_of_equity":32.715696850476974,"pct_of_assets":8.169894938119661},{"year":"2021","period_end":"2021-03-31","policy_total_yen":16084000000,"equity_yen":43581000000,"equity_basis":"jgaap_consolidated","pct_of_equity":36.90599114292926,"pct_of_assets":5.846197463643005},{"year":"2022","period_end":"2022-03-31","policy_total_yen":15221000000,"equity_yen":56374000000,"equity_basis":"jgaap_consolidated","pct_of_equity":27.000035477347712,"pct_of_assets":5.235856033738438},{"year":"2023","period_end":"2023-03-31","policy_total_yen":14754000000,"equity_yen":67808000000,"equity_basis":"jgaap_consolidated","pct_of_equity":21.75849457291175,"pct_of_assets":4.461958132473644},{"year":"2024","period_end":"2024-03-31","policy_total_yen":19668000000,"equity_yen":81900000000,"equity_basis":"jgaap_consolidated","pct_of_equity":24.014652014652015,"pct_of_assets":5.708116391244537},{"year":"2025","period_end":"2025-03-31","policy_total_yen":16038000000,"equity_yen":86216000000,"equity_basis":"jgaap_consolidated","pct_of_equity":18.602115616590886,"pct_of_assets":4.555797008820146},{"year":"2026","period_end":"2026-03-31","policy_total_yen":15691000000,"equity_yen":89454000000,"equity_basis":"jgaap_consolidated","pct_of_equity":17.540858988977575,"pct_of_assets":4.187527354633475}],"scale_note":"The policy total is Official (as filed) — the filing's own total carrying amount for the whole policy bucket, listed and unlisted, summed across the entities the filing discloses. It is a floor: holdings at group companies the filing does not name are disclosed nowhere and are not included. The percentages are calculated, not filed, and carry their formula. equity_basis names which figure the denominator is, because filers report under Japanese, IFRS or US accounting standards and an adopter of the latter two stops tagging the Japanese consolidated figure — a parent-only denominator is a different measure and is labelled as one, never silently mixed with a group figure. Percentages are null where equity or total assets is missing or not positive; missing is never shown as zero.","scale_reference":"ISS's Japan proxy voting guidelines recommend a vote against the top executive at a company that allocates 20 percent or more of its net assets to cross-shareholdings, a policy effective from February 2022. ISS counts unilateral holdings, not only mutual ones.","ownership_calc":"shares held ÷ (issuer's issued shares − treasury shares) × 100, both as filed, the denominator taken from the issuer's own annual securities report nearest the holding's fiscal year end","ownership_note":"Derived, not filed. The denominator is the issuer's own reported issued shares less treasury shares, from its annual report nearest this holding's fiscal year end on either side — pct_basis_period_end gives that date, and it can fall after the holding's date where that report is the closer one. For a single-class listed stock this equals the stake's share of market capitalisation. It is null where the issuer files no annual report we hold; where the issuer's share count moves by half or more across the window, because a split or issue makes the share base indeterminate; and where the result would exceed 100%, which is a data fault rather than a stake. It is less exact where the issuer has more than one share class (pct_share_classes > 1), because treasury shares are reported across all classes.","holder_share_calc":"this position's book value ÷ the holder's shareholders' equity (or total assets) × 100, both as filed in the holder's own annual securities report","holder_share_note":"The mirror of pct_outstanding. That sizes a stake against the ISSUER — how much of the issuer this holder owns. pct_of_holder_equity and pct_of_holder_assets size the same position against the HOLDER: how much of its own capital is committed to this one name. Calculated, not filed. Null where the holder's filing gives no usable denominator, never zero. holder_equity_basis says which accounting figure the denominator is, and a parent_only basis is not comparable with a consolidated one. A position CAN legitimately exceed 100% of equity — a holder whose book equity is smaller than one long-held stake is a real and commercially interesting case, not an error — so no ceiling is imposed. Extreme values are worth checking against the filing: where the position's own two filed numbers are mutually impossible the row is marked `implausible`, but that test catches only scale errors visible per share, so it does not catch every bad figure. The book value and share count are returned alongside so the reader can check.","action_calc":"keyword match over the filing's own stated purpose and table footnotes: 株式分割、株式併合、株式交換、株式移転、会社分割、合併、持株会社、商号変更、公開買付、上場廃止","ratio_calc":"current shares ÷ prior shares where that ratio is an exact whole number (or its exact reciprocal) — the signature of a split or a consolidation rather than a trade","history":[{"year":"2020","period_end":"2020-03-31","named_holdings":49,"book_value_yen":14167000000},{"year":"2021","period_end":"2021-03-31","named_holdings":45,"book_value_yen":14785000000},{"year":"2022","period_end":"2022-03-31","named_holdings":43,"book_value_yen":13877000000},{"year":"2023","period_end":"2023-03-31","named_holdings":42,"book_value_yen":14735000000},{"year":"2024","period_end":"2024-03-31","named_holdings":41,"book_value_yen":19648000000},{"year":"2025","period_end":"2025-03-31","named_holdings":41,"book_value_yen":16024000000},{"year":"2026","period_end":"2026-03-31","named_holdings":34,"book_value_yen":15675000000}],"history_note":"One point per annual report filed. Each year's book value is as filed; book values are fair-valued at period end, so a change reflects both trading and market moves.","provenance":{"trust":"official","note":"Figures exactly as filed in each company's 有価証券報告書 (annual securities report), EDINET. Raw filings archived with SHA-256; doc_id links to the source filing."}}