Yu and Mika are finally reunited, but the injuries Mika had sustained from fighting the Demon Company threatens his life. Determined to keep Mika alive, Yu tries to persuade Mika into drinking his blood... Even if it means Mika will become a true vampire.

It is the vampire apocalypse and Yuu wants to avenge his brother. To do this Yuu will have to learn many new skills. On his adventure he meets many new people such as Shinowa and many more.