Mikaela?Hyakuya belongs to the third generation ancestor of Krul Tepes system. He is a close friend and the most important family member of Uichiro Niwa, and has an indelible connection with Yuichiro Hyakuya. At the same time, he is also one of the experimental bodies of "Doomsday Burning Angel". When I was a child, I was abused by my parents and then abandoned to a hundred nights orphanage.

When escaping from the vampire city with Ichiro, Michael was negligent and stabbed Ichiro with his sword. In despair, Michael was seriously injured and dying by Ferid. He was sucked by Krul Tepes, became a vampire, and gained status, strength and weapons.

Finally, due to an unexpected nightmare, Xiongichiro's hidden angel power was revived, and he was brought back to life with the help of his feelings for Michael, and the vampire gene in his body was restored to its original shape. After Mikaela?Hyakuya reunited with Xiongyilang, he tried to take him away, but failed because of non-human awakening.

Brief introduction to the story of the fire angel at the end of the film;

This book, under the banner of "The Last Story of the Human World", depicts that one day, due to the ravages of unknown viruses, human beings are facing the dilemma of extinction. At this time, only children under the age of 13 will not be infected by the virus. These children are imprisoned by vampires from underground cities and used as blood donors to raise livestock.

The two protagonists, Yuichiro Hyakuya and Mikaela?Hyakuya, tried to escape, but only the former escaped, while the latter became a vampire, because he drank vampire blood when he died. In order to avenge Michael, Xiongichiro, who is full of hatred for vampires, decided to join the Imperial Ghost Army and started the war with vampires.