http://www.mangago.zone/read-manga/hadaka_yori_mo_oku_fukaku/ not sensei but university's worker
http://www.mangago.zone/read-manga/pink_to_mameshiba/
http://www.mangago.zone/read-manga/katakoi_alliance/
http://www.mangago.zone/read-manga/ayashi_no_hakoniwa_ni_ukabu_tsuki/
http://www.mangago.zone/read-manga/sweet_beast_suji/
http://www.mangago.zone/read-manga/kudou_sensei_no_majestic_days/
http://www.mangago.zone/read-manga/nevermore_team_hitman/ "student" x "sensei"
http://www.mangago.zone/read-manga/pretty_wimps/
Young bad education ; young good boyfriend ( i really love this)
Yukidoke no koi
Kimi to Deattekara Boku wa
Pretty Wimps
Any good teacher x students yaoi (the teacher is the bottom)