You are a small child, you have a very fragile body since birth... your parents have not always been present so Rui must take care of you

He arrived from Kamiyama school, left his backpack on the side of the door and walked towards where you were

"Hi..."

He told you softly as he knelt next to the bed where you were lying, he had to take care of you...your parents were irresponsible...irresponsible ones so he always took care of you