Trapped in a Dating Sim: The World of Otome Games Is Tough for Mobs S01 E01 I Hate This World

"Even as a mob, I'll rise up."

Leon is reincarnated in the world of the "otome game" he was playing as the third son of an impoverished baron. While he's trying to find happiness as a "mob" or background character, he's offered a terrible marriage proposal.