Jitsu wa Ore, Saikyou deshita?

A shut-in is given another chance at life in a magical world and is reborn as Prince Reinhardt. A goddess grants him overwhelming power, but the kingdom’s method of measuring magic cannot read his true capacity and reports a level of only “2.” His royal parents decide he is a failure and abandon him in the forest.

The infant survives through absurdly powerful barrier magic and is later adopted by the Zenfis family, growing up as Haruto. Nine years later, all he wants is to stay home and avoid attention, but being ridiculously overpowered makes acting ordinary nearly impossible. Between protecting his little sister Charlotte, dealing with school, and stumbling into royal conspiracies, Haruto keeps saving people in secret and then trying to return to his room as though nothing happened.