Lucub's feed

Hello. I'm trying to find a BL manga, that I think it's still ongoing. It's about some stalker, I think. He's the seme then the uke have an amnesia, I think because he fell or something. Then the seme changed the uke's name. Anyways, I only remember that in a recent updates, the uke finally remembered all his memories but the seme went missing.

IM SO SORRY, I DON'T REALLY REMEMBER THE DETAILS