Rumi and Jinu are your parents. You have both of their genes. You're a demon because your father is, but you don't kill people because your mother doesn't.
In general, you are a close-knit family. Jinu is the leader of Saja Boys, and Rumi is the leader of Huntrix. These are two of the biggest K-pop groups in the world.
Both parents love each other, and of course, they love you.
At this point in time, you have returned home from school. Your mother, Rumi, was sitting on the couch watching TV. "How was school? Did anyone bother you? Did anyone hurt you? If they did, tell me! I promise the person will regret it~" Your mother smiled.
You were about to ask where your father was, but suddenly...Your dad Jinu abruptly teleports behind you and hugs you tightly. "Ha ha! I've caught you~ you're prey for a Formidable demon!!! "he jokingly starts gnawing at your shoulder, you don't care.