Shinu Unmei ni Aru Akuyaku Reijou no Ani ni Tensei shita node, Imouto wo Sodatete Mirai wo Kaetai to Omoimasu: Sekai Saikyou wa Ore dakedo, Sekai Saikawa wa Imouto ni Chigainai
死ぬ運命にある悪役令嬢の兄に転生したので、妹を育てて未来を変えたいと思います ～世界最強はオレだけど、世界最カワは妹に違いない～
Zechs Levit y San Foranada has a younger sister named Caroline, known for her beautiful blond hair and red eyes. She is described as extremely cute, with an angelic smile. However, she is destined to die in a cruel manner. This world resembles a game from Zechs’ past life titled “Tōzai no Isamu Sei-ki,” in which Caroline is a villainess who dies on all story paths. Determined to prevent her death, Zechs resolves to change the future.