※估算 根据卷数、再版次数、连载杂志等推算的参考值(非实测)
作品概要
Twin sisters Airi and Himari have always been very close, and worn identical hairstyles, clothing and accessories. But after they enter high school, Himari starts to drift away from her sister. When cornered by Airi, she explains that she has "a promise with senpai to fulfill," no matter what.
来源: AniList
外部数据库: MADB · Wikidata · AniList
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