looking for bl manga name :,)

ok i don’t remember much from this but it’s a bl & pretty short i think? they met when they were kids (not really meet but first saw each other) where they sat across from each other on the train. seme/the top, who works as a photographer/film photo person idk what it’s called, did like a 「 」pose with his fingers to “take a picture” of uke/the bottom. they met again in the future and seme took a bunch of photos of uke… i don’t really remember what happened in between but i know they had an argument or something along those lines (i think it was something about one of them dying because of the other???? maybe not idk…) but they didn’t talk for a while u til uke went back to the shop that seme works at and saw all the film photos being hung to dry out and the photos being of uke.. idk if i got some things wrong but please lmk if you know any manga that is similar to what im describing it’s been itching my brain and bothering me all day