Oshi ga Imouto ni Narimashite

Sinopsis

Kazuka Kojima is a pretty and popular high school girl secretly obsessed with the idol "Kane-chan". When her parent remarried, she found out her new step-sister Akane is the "everyone's sister" - the "Kane-chan" of her dreams!　Hyper yuri love comedy begins!

(Source: Comic Boost, translated)

Sinopsis original de AniList.

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