He is lazy, arrogant, and a complete scoundrel, yet his potential is the greatest in the world?!

One day, the protagonist finds himself reincarnated as "Shin Darkside," a villainous noble from a game he was really passionate about. The life filled with ruin flags leads the protagonist into despair, but it turns out that Shin possesses the cheat skill [Gluttonous Demon King], a formidable ability that allows him to consume others' magic and skills, transforming them into his own! "If I can train this skill to its limits, perhaps I can avoid these ruin flags?" Armed with the knowledge of the original story from his previous life and the Gluttony Demon King skill, Shin endeavors to challenge his bleak future! Unbeknownst to him, he begins to behave like a main character... and soon enough, adorable heroines from the original narrative and powerful allies who admire the former tyrant Lord Shin start to gather around him...?!