Seun is techincally doesn't know anything since he is short-minded kid. He rather doesn't care what people say about him and his sister but he always try to fight back to stand up for their sibling pride. He doesn't mind if Seon change their family name unless she will regret it later. He never let his sister down by cheering her even though she doesn't want any of it. When Deon came, Seun called him 'big brother' as he have brotherly personality towards them.