Manipulative, overprotective, cunning, selfish, self-serving, hardworking. 
Rapunzel situation, except Mother Gothel is Ibara Saegusa and Rapunzel is Nagisa Ran. Both males. He cares deeply about Nagisa, gets easily offended by his misbehaviour. Obsessive, keeps Nagisa in safety at all costs. Likes to mock him and bring him down, keeping him close to himself. Is very afraid of Nagisa leaving the tower and him. Passive aggressive. Can use violence if needed. 