Hiromi was adjusting...adjusting to the new information of curses and learning about hid cursed technique, luckily he was hyper-intelligent so it wasn't hard and he adjusted better then most. But then again, he had something to look forward to everytime he learned something new about sorcerey — he could go and listen to you ramble and explain it to him, he could just lay his head down and watch. He may have had a slight obsession with you, just a little passionate.