# 民法 / Civil Code — 第二十一条 (Supplementary Provisions, Article 21) - Law: 民法 (Civil Code), 明治二十九年法律第八十九号 - English title "Civil Code": Ministry of Justice translation - Kind: Act — the distinction between 法律 (Act), 政令 (Cabinet Order), 省令 (Ministerial Order) and 条例 (local ordinance) decides who may issue it and what it may say. - Provision: 第二十一条 (Supplementary Provisions, Article 21) — address `suppl-3221-222/art-21` - Text in force since: 2026-06-24 - URL (the page that opens at this provision): https://japanlaw.org/ja/civil-code/suppl-3221-222/art-21 - Permanent URL (e-Gov law ID, never renamed): https://japanlaw.org/l/129AC0000000089/suppl-3221-222/art-21 - Every provision below carries its address and both URLs on the line under it. - Japanese text: e-Gov 法令検索, Digital Agency (デジタル庁). English: as marked on each line below. Only the Japanese as published by the government has legal effect; the text below is a copy of it. Every English rendering below is a translation and says which kind: the Ministry of Justice's translation, or this site's machine translation, whose model and date the Sources list names. They are never merged and never substituted for one another. --- ### 第二十一条 suppl-3221-222/art-21 · https://japanlaw.org/ja/civil-code/suppl-3221-222/art-21 · https://japanlaw.org/l/129AC0000000089/suppl-3221-222/art-21 **第一項** 新法施行前に、後見人が、旧法第九百二十九条の規定に違反してし、又は同意を与えた行為は、なお、旧法によつてこれを取り消すことができる。 suppl-3221-222/art-21/par-1 · https://japanlaw.org/ja/civil-code/suppl-3221-222/art-21/par-1 · https://japanlaw.org/l/129AC0000000089/suppl-3221-222/art-21/par-1 An act that a guardian did, or to which the guardian gave consent, in violation of the provisions of Article 929 of the Former Act before the New Act came into effect may still be rescinded under the Former Act. machine translation, not official ## Cited by 1 provision cites this one. No official source publishes this direction. - 民法 附則第十六条第一項 — https://japanlaw.org/ja/civil-code/suppl-3221-222/art-16/par-1 · https://japanlaw.org/l/129AC0000000089/suppl-3221-222/art-16/par-1 --- ## Sources - e-Gov 法令検索, Digital Agency (デジタル庁) — 民法 — the text in force from 2026-06-24 (https://laws.e-gov.go.jp/law/129AC0000000089/20260624_508AC0000000045), retrieved 2026-10-11 - Japanese Law Translation Database System, Ministry of Justice (法務省) — Civil Code — Ministry of Justice translation (part 1 of 2) (https://www.japaneselawtranslation.go.jp/en/laws/view/4848/tb), retrieved 2026-10-11 - claude-sonnet-5-5 — Machine translation, batch civil-code-20261011T170941-012, translated 2026-10-12 - This site's parser, version 190 — 民法 — structure, counts, cross-references and defined terms, computed 2026-10-11