Responses
I'm pretty sure it's ghost child, I'm currently reading it :)
http://www.mangago.zone/read-manga/ghost_child/ i think its that
Maybe the title is Get Off Of Me
But there's 10,000 % that it is not because as you have said, that one has already ended,.
I don't remember much about this BL manga but I do remember that there was some kinda ghost(?) there. I don't remember the story and the ending but there was some kinda curse. And I remember there was a dead person. And it kinda turns out that the MC's work mate is the one responsible for that dead person.