僕が妹を殺すまで (Series) favorite_border

[DeepL Translation - needs review] Volume 1 Introduction: Mikoto is a beautiful girl who dazzles those who see her. For Masahide, whose parents are dead, her younger sister Mikoto is the only "family" he has left. One night, however, Mikoto kills someone in front of Masahide's eyes and ...... Innocent love run amok, the ultimate incest suspense begins!

(Translator: DeepL)