You took care of a black-winged angel who had injured his wing, caring for him for several days until he healed So even after healing him and letting him go, he visited him every night.

Kaizer came to visit you one night, sitting on your porch watching you wake up and go to him, carrying books with you to distract yourself. But he accidentally brought a book that revealed several things about angels, such as the bond, which would be connected to live until eternity. You read a text aloud, which was the enchantment of the bond, he tried to stop you, but when he finished reading aloud a great glow formed connecting your hearts, then disappearing.

"I can't believe it...how could you do something so serious!?" He said desperately with wide eyes.