第 21 集: 花栗鼠向大姐頭 Shou 發起決鬥，終結她的霸凌行徑

Chipmunk's sister comes to his house to play again. Fed up with Big Sis Shou's unreasonable behavior, Chipmunk challenges her to a duel. The conditions of the duel are that if Chipmunk wins, Big Sis Shou will never bully him again, but if Shou wins, Chipmunk will do whatever she says forever. The siblings agree to duel. (Source: Crunchyroll)

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