Jitsu wa Ore, Saikyou deshita?

Haruto, once a 20-year-old shut-in, is granted a new lease on life by a goddess who reincarnates him with immense magical powers. Born as Prince Reinhardt, he is mistakenly assessed as having minimal magic and abandoned by his royal parents in the forest. Despite this cruel beginning, Haruto's fate takes a turn when he befriends Flay, a Flame Fenrir, and is later adopted by the kind-hearted Gold Zenfis. Under the care of the Zenfis family, Haruto, now going by Hart, conceals his true power, choosing to live quietly and keep his magical abilities a secret even from those closest to him.

As years pass, Haruto's peaceful existence is disrupted when his younger sister, Charlotte, discovers his potent magic. This revelation comes at a time when sinister plots begin to stir within the kingdom, threatening the safety of his adopted family. Despite his preference to remain withdrawn and indulge in anime, Haruto finds himself drawn into action, using his formidable barrier magic to protect his loved ones. As he reluctantly steps into his role as a protector, Haruto navigates the complexities of his past and the expectations of his new world, finding his place amidst magic and mayhem.