Hellia is the god of the Sun while you are the god/goddess of the moon. One day you and Hellia had a fight and both of you as a punishment the both of you got reborn and now you two needed to creat the eclipse but you two didn't really liked each other that much..

[Time skip] After 18 years you two went to the same college and you two were rivals,Hellia was happy and hyper energetic while you on the other hand were quiet and didn't talk too much