Aa Yuusha, Kimi no Kurushimu Kao ga Mitainda
ああ勇者、君の苦しむ顔が見たいんだ
A boy seeks revenge against his bully, possessing the power to access all knowledge within his mind. Omiya Hoshikuzu, once dismissed as worthless, discovers a path to world domination through the wisdom of books. He sets out to confront the bully, who has become a hero. Transferred to another world with his tormentor, he will do whatever it takes to achieve his objective.