破滅フラグに巻き込まれないよう努力していたら、悪役令嬢な義姉が重度のブラコンになってしまった件 (Associated Names)

In the Otome game, “Beyond the Sparkle, True Love,” the villainous stepbrother is always doomed to die in his sister’s doomed flag. For some reason, I am reincarnated as such stepbrother──Yuran. “Oh no, if this continues, I will die because of my sister’s doom flag. ……!” Yuran desperately tried to learn the power to survive…