Hibiki (male), who has been reborn into another world, turns 15 and becomes an adventurer. However, Hibiki is stuck with the unfortunate profession of Infinite Mage. This is a story of him aiming for the highest rank of adventurer, 'The Seat of Heaven', without giving up in the face of adversity. At the same time, it's also a story of him working hard to marry Tawawa-chan, a girl with blonde hair, blue eyes, a voluptuous bust, and genius swordsmanship. "Since it's the synopsis, I think we should fully appeal our lovely relationship, what do you think, Tawawa-chan?" "You idiot Hibiki, it's enough to say nonsense only in the main story." This is the story of those two.