
Well I guess that it is kinda similar to 19 days other than that the relationship kinda reminds me of "Heroin" a chinese bl series, which was based on a light novel (and was cut in the mid cause of China's restrictions (╯°Д °)╯╧╧)
aside from that I'm pretty sure that I've read similar shounen Ai but I can't remember atm

Cherry blossoms in winter maybe? Idk I remember one called my cute copycat or something, they're both pretty fluffy with what I've read so far but if you want funny.... maybe take care of my housekeeper or star x fanboy, maybe even finally living together with my antifan idk what you'd like just some suggestions, also I haven't finished most of these so don't blame me if they turn out bad lol
Is there anything similar to this? It's so funny and love the characters, especially the MC.