Toji's Younger Brother Is the Zenin Clan Head

After Zenin Jinyu died, he woke up as the youngest brother in a new family. Living another life is great, of course, but... did I transmigrate into some anime? What are all those weird-looking things? Why can my second brother not see those sanity-draining things? I'm so jealous! Wait, why are there so many cold-faced, handsome black-haired guys in this family? Is the Zenin family some sort of second male lead factory? Then who's the protagonist? Could it be that gorgeous white-haired guy next door? After thinking it over and over, Zenin Jinyu had an epiphany. If a second male lead wants to avoid dying young, becoming the protagonist himself is the only way out. Step one to becoming the protagonist: Observe the protagonist and study him. Step two: Work hard and become even stronger than the protagonist. Step three: Pull out all the stops to make the protagonist one of your own. The Zenin family: Why does the heir to the Ten Shadows Technique keep running over to the Gojo family next door? Blurb incomplete. Theme: Stay true to yourself