In a world much larger than initially thought. In this world where Death was his only constant companion. In this journey where all boy knew was death. He had come to know life.

He had already lost his first love—Tohno Shiki was not about to lose his sister and childhood friends (and also maids) as well. Even if that meant selling his soul to the literal Devil—who happened to also be a magical girl, and somehow be an even bigger siscon than he was? And here Shiki thought that dating a Vampire Princess would be the highlight of his life...!

What happened if Crimson Moon survived his battle against Zelretch and escaped through the dimensions? What if he found a host in a certain blonde Dhampir with a Longinus? But as with Zelretch, Crimson Moon had underestimated his host and had now created his own greatest enemy and Valerie will stop at nothing to kill him. The battle for the Throne of Brunestud had begun.

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