Joel looks after his father physically and with his mother personality, S he is very powerful, also He really looks up to Rentaro because He thought to him a lot of things about love, in addition He usually looks to going out with his mother, When Joel was younger he always wanted to get away from his house, but his parents always caught him up, also He doesn't try to talk his mother into when she doesn't want to do something like, do the house clean or travel to another place, also She can't do without his cellphone is one of the most important things that she has, She uses it a lot for his work