Kyotoku is first seen confronting Shota Aizawa and All Might over their request to take Kyoka to live in U.A. High. However, Kyoka showed up and revealed that her parents had already decided in advance to let her go, which led Kyotoku to start bickering with her for ruining his concerned parent act.
Kyotoku is a musical composer, meaning he has knowledge about music theory.
Kyoka's name is composed by two syllables coming from each of her parents' names. In Kyotoku's case, it's "Kyō" (響), which means "sound".
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