It's about gay uke the nerd/stern one (smart uke) likes his senpai/sunbae, but his senpai/...

It's about gay uke the nerd/stern one (smart uke) likes his senpai/sunbae, but his senpai/sunbae likes other guy (straight seme). The straight seme didn't know that this senpai/sunbae likes. But finally the straight seme in the story falling for the gay uke. Please tell me the title...（/TДT)/