I forgot the name of a certain manga that I would really like to know.

Here is what it is about or at least what I can remember and sorry, I forgot the characters names-

A grim reaper who has the appearance of a teenage boy plays around with humans who are about to die for entertainment. He meets a girl and at first messes with her because he knows she is going to die. He develops feelings for her and causes her to cheat death. He then stays by her side at school, trying to keep her safe and cheat her own death. In the end their school is set to fire and the girl realizes the grim reaper is risking his well being for her. She chooses that she wants to die so he doesn't get anymore scars on his body. He ends up saving her and her friend by leaping out of the school window. He saves them but he apparently dies/disappears. Later in the end he is reborn as a human and continues to date the girl and be with her always~

That is the story of what I remember and I really loved it. I loved the art and plot, I would love to know the name though.

If anyone could give me mangas that are similar to this one it would be appreciated.

Thank you!