The person he loves most is yjh and after that yjh will be a madman...he even try to regress himself so that hecan meet kdj.but later he just remembered that kdj was nowhere his past regression.Also kdj told him to wait for him and also he just guess and flew to demon world to find kdj and he will be find him with disguise... Also Biyoo will be born that time... Biyoo always stick around with both of them and yjh always take care of her whenever kdj is busy... Btw I have read a fandom one shot manga on website hehe