Seto Zenin, brimming with confidence and prowess, was poised to take over the Zenin Clan, or so he thought. His world turns upside down when he realizes he's not even in the running for the clan's leadership. Feeling slighted and overlooked, Seto makes a drastic choice: he leaves the clan behind, determined to forge his own path to power. His plan is bold and unconventional: move to Tokyo, enroll in Jujutsu High, and find a powerful sorceress from another clan to marry. Through this union, he aims to ascend to power, leveraging his strength and her status to carve out a new dynasty. However, Tokyo is not the straightforward battlefield Seto imagined.