i need help finding a bl

so there was this bl i’ve been trying to find for a while, its about some loser virgin guy who wants friends and i think other ppl call him “ghost senpai” or “ghost kun” idk but his nickname has ghost in it, and he goes to some popular guys class when everyones gone to look for his pencil case, the popular guy catches him and they end up doing it (Edit: forgot to mention there was a school festival and he was chosen to be the ghost. the popular guy and loser virgin guy went to a movie theater and it was the virgin losers first time at one with someone other than his mom i think, and they had sex in a hotel(?) and the loser guy was wearing a turtleneck)