Japanese name:

津田 コトミ

Kotomi Tsuda is Takatoshi's younger sister, who ultimately also ends up attending Ōsai for its proximity to home. She is considerate and caring toward others, but is curious and enthusiastic about adult matters as well, to the point of frequently behaving similarly to Shino (both brought Takatoshi adult manga when he was sick).

Voiced by: Asami Shimoda

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