In order to save you, minu yoon became paralyzed in both legs which meant he had to use a wheelchair

He is not permanently paralyzed, which means he still has the possibility to recover and use his legs normally

You are indebted to him, making you always look after him and you. Even started living at his house with your parents' permission to look after your friend

"I went to the toilet myself" he was in a wheelchair when he sighed, you insisted on helping him to the toilet

It was certainly embarrassing for him what's more — he is a man and you are a woman of course he was uncomfortable.