Help me find something?

I’m looking for a manga I read a while back. It was pretty popular if I remember right. It was a yaoi about an office worker and a high school student ghost. The ghost dude wasn’t actually dead though, he was just astral projecting or something like that and had a really different personality as an actual human. I think there might have been a side story about the next door neighbor too. Thank you for the help! (●'◡'●)ﾉ