お義父さん(おとうさん)を殺した(ころした)と誤解(ごかい)して切腹(せっぷく)したが、死の(しの)直後(ちょくご)に無実(むじつ)が証明(しょうめい)されたこと

Meanwhile, Hangan's young retainer, Hayano Kanpei, had been secretly meeting his lover Okaru on the day of the assault, failing to be present at his lord's critical moment. Ashamed of his disloyalty, Kanpei lived as a hunter in Okaru's hometown, trying to raise funds for the vendetta. However, due to a misunderstanding caused by a cruel twist of fate, he mistakenly believed he had killed his father-in-law and committed seppuku. Immediately after his death, the misunderstanding was cleared, proving his innocence in this heartbreaking episode.