Imouto no Tomodachi ga Nani Kangaeteru no ka Wakaranai Anime Details and Episodes Chie-chan has a friend, Tsuyu-chan, and Chie's brother has no idea what she is thinking. Series info Watch free DetailsFormatMangaStatusFinishedScore68/100SourceOriginalCountryJapan GenresComedyRomance TagsHeterosexualShounenMale Protagonist RelatedI Don't Know What My Sister's Friend Is Thinking (Alternative) RecommendationsAharen-san wa HakarenaiShikimori's Not Just a CutieHajimete no Suwa-san CharactersTsuyu Amemiya