Sono Akuyaku Kizoku, Mama Heroine ga Suki Sugiru ~Shinshi na Doryoku de Saikyou to Nari Fuguu na Oshi Chara Tasukemakuru~

The mom characters in the game are all unlucky sub-heroines who invariably end up with tragic storylines. "Why… Why does such a cute mom have to die?!" Despite the protagonist's best efforts to steer the narrative towards a route where they are saved, his attempts come to naught, leaving him filled with frustration. One day, he suddenly finds himself reincarnated into the world of MamaFan. However, he is reborn as a villainous aristocrat destined for nothing but the worst outcomes. This man, deeply enamored with mom characters, is about to embark on a fulfilling journey. His days will be spent rescuing his beloved mom characters and creating a harem full of plump women. His adventure is just beginning!