does someone know that is this manga called?

Night October 2, 2020 8:53 am

does anyone know the name of the manga, its a short story and i think it only have 4 chapters for now but is on going. the story is there were 2 high school friends, one day one of the friends confesses his love for his guy friend but got rejected, years later the guy who confessed works in a library and the other guy comes in to buy a book, and then he finds out that his friend goes around having Se* with other people because he feels guilty for rejecting his bestfriend even though he felt the same why.
(T-T) pleases some one!!!!

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