The video above lists all of Sun's trauma (it wasn't made by me), and it's sad to know how bad it really is...he was abused by the old Moon, and the only time the old Moon was even nice to him, was when Eclipse was about to take over his body...it's sad to know that Sun cares so much about old Moon, and old Moon just hurt him and disregarded his feelings so many times...
Sun himself is really just overlooked, he really isn't mentioned in a lot of things, and if something major happens, then he's actually mentioned in something, and Old Moon just didn't really care about Sun and he hurt him a lot, that was apparent when the New Moon tried to hug him and Sun pushed him away, if the old Moon hadn't hurt him, then Sun wouldn't have pushed Moon away...
This is just me ranting but yeah.
