Seraph of the End, Vol. 26: Vampire Reign — Takaya Kagami

Having seen Yuichiro's past, Mikaela opens his heart and accepts becoming Yuichiro's new demon. But Shikama Doji attacks, trying to keep them from joining forces! Kimizuki, Yoichi, and the rest of Yuichiro's friends come to their rescue just in time, allowing them to complete the ritual. Now that Mikaela has become a demon and Yuichiro's new Cursed Gear, do they finally have the power to stand up against Shikama Doji?!