Reborn in a fantasy world as the son of a noble, Zelaris initially thought he had won the reincarnation lottery. A luxurious mansion to live in, a wealthy family that adored him, and a beautiful maid.

But life is never that simple for an isekai protagonist.

While still a baby, Zelaris discovered that he transformed into a vampire whenever the twin moons aligned. Then, during a visit to the church, a Holy Sword suddenly manifested and chose him as one of the seven heroes destined to fight the Demon King.

From that moment on, troubles began to arise.

And at the same time, the prologue of a legendary tale began.

King Chronicles