Campus+War+Emotions
Background: The chaos created by the previous generation continues to this day. The demon lord has suddenly disappeared, leaving no one to control it and running rampant. Human beings fought against the few surviving angels. The emperor of angels was killed, and powerful forces were scattered everywhere. A few humans integrated with the forces, obtained armor and corresponding powers (AM) that would be attached to their bodies, and joined the global organization-Messiah, to fight against demons and protect the territory of human existence from being invaded by demons.
Protagonist: A mixed-race Chinese-European who suffered from an incurable disease since he was a child. His parents sought medical treatment everywhere. A Japanese doctor promised to cure him, but instead treated him as a test subject. He was implanted with the eyes of the dead angel (the source of angel power), but unexpectedly cured him. In order to stimulate the power in his body, he put a demon into his home, killed his family, and got what he wanted. After that, the doctor took him to Japan and became his guardian.
Attention, [no heroine] Oh, you can cp as you like
Concept: The protagonist's emotional changes and redemption. Even if he has the power of a god, he still chooses to love and sacrifice in a mortal way.