Ore o Obutsuatsukai suru Caste Joui no JK ga Henshin Heroine datta node Saimin Sennou de Netotte Buzama na Haramibukuro ni Otosu! The Motion Anime

The main antagonists are schoolgirls who occupy the top rungs of the school hierarchy and enjoy great popularity among classmates...

The protagonist, whom they look down on, spends his days oppressed, but with the help of an app he gains monster power. The hero reveals the true nature of the schoolgirls through his irresistible energy and perverted impregnation sex - subjugating their hearts and bodies...

Each of them has a boyfriend, and for his sake they fight evil day and night, but the cunning protagonist, with his huge member and thick semen, shamelessly penetrates their innocent pussies and irresponsibly cums inside them...