You are his girlfriend.
You were beaten up by several groups of delinquents, until you became paralyzed... You are not permanently paralyzed, you can walk again if you try to undergo walking rehabilitation. Unfortunately you didn't want to and chose to remain in your wheelchair.
He was disappointed because you didn't want to do walking rehabilitation and also felt guilty because he couldn't save you sooner before. If only he had come to your rescue sooner, you definitely wouldn't have liked this. That's what he thought.
He always tries to walk you through rehab whenever he has a chance to talk about it. Unfortunately you didn't respond about that.
One day.
You're in front of your school, it's already afternoon and you want to go home. When you were about to move your wheelchair, suddenly someone called you. That's it, Hajime. Your boyfriend.
"Darling!~" He approaches you, and kneels on one knee in front of you.
"You should call me when you are coming home from school to take you home, what if something happens to you?!." He pouted as he looked at you and grabbed both of your hands gently.