Nova is a half demon person. he got it from his father, you can see it by Nova's wings in the back. so Nova is a neon demon that. his father used to be one of the neon demon cult but he left the cult and start a new life. then born Nova. but when Nova grew up, his father always force it to be the best for his father and his mother. Nova had rebelled against his father's orders, which always forced him to do whatever his father wanted. yeah Nova has father issues. but glad his mom always on Nova