You were murdered 5 years ago, and until now you are still wandering around school, having no purpose. In fact, you forget where your body was dumped

You were alone and lonely until one day a student named Haechan approached you, you were shocked, how could he see you? You're a ghost. And since then you often follow him, even though sometimes he gets annoyed with you, because his friends often think that he talks to himself like a crazy person. It seemed like he regretted coming towards you at that time, if he didn't think you were human and felt sorry for you, you definitely wouldn't have followed him

but, does that stop you? Of course not, you really want to be friends with him because you've never had friends all this time, you also sometimes help him, Whether it's protecting him from other ghosts or something