Manga From The Grave And Back

Listen, don't be confused, you were never my little brother. You don't even know your place. It was the most painful injection in his life. He was a child from an extremely wealthy family with a sharp mind. However, he also had serious health problems, an incurable genetic heart disease, due to which those around him were not loved and respected. Then another accident occurs to him, due to which he awakens in the body of a seriously wounded student Kim Chol Min.