【民法総則】意思能力と行為能力 https://shakaijin-shihoshiken.com/%e3%80%90%e6%b0%91%e6%b3%95%e7%b7%8f%e5%89%87%e3%80%91%e6%84%8f%e6%80%9d%e8%83%bd%e5%8a%9b%e3%81%a8%e8%a1%8c%e7%82%ba%e8%83%bd%e5%8a%9b/