Koami is a puchidol with a striking resemblance to Ami Futami. Along with her twin sister Komami, she's known for being a prankster—the two of them are basically partners in crime when it comes to pulling pranks on others.
Unlike most puchidols, Koami and Komami weren't adopted by their lookalike idols. Instead, Takane ended up taking them both in.
Content compiled by AnimeList.moe from publicly available sources.