help me find this story pls!

I don't remember much so bare with me. it's either romance or bl I genuinely don't remember, high school setting, the ml is a ghost wondering around the school but he's not actually dead, he's in coma in the hospital. it ends with his spirit disappearing but he appears in his human body back to school. I'm pretty sure it was a manhwa but my memory is so bad!! I remember liking the story cuz it was cute, bittersweet and sad, I wanna check it out again. I'm starting to feel like I subconsciously invented this ngl TT