Devils Honey
http://www.mangago.me/read-manga/devils_honey/uu/devils_honey-chapter-1
Fake na Junjou
Ch1-2 megane teacher x student ch3-4 former student x teacher (kids ch4)
Hito ni Ienai Aidagara (Yukimura)
1-73, 174-181 student meets teacher over dating site (yaoi) 74-121 stepbrothers (yaoi) 122-159 coworkers, love-hate relationship (shounen ai) 160-173 barber shaves his boyfriend's pubic hair (shounen ai)
Young Bad Education
student x teacher vol2 ch2 - You are a teasing seed of a spark - delivery boy x writer younger seme Young Good Boyfriend (Sequel)
Love in Motion
Part of Fubin BL Anthology Helpless characters BL Anthology Itoshi no Nekokke (Adapted From)
Fudanshi-kun No Honey Days
honestly - hentai
Koi o Kataranai Kuchibiru
ch1 - guy helps professor and student get together. cute ch2 - chiefs in a restaurant. not real shounen ai moments. meh ch3 - student x teacher (teacher is kinda shota character). cute ch4 - coworkers. staring at each other xD . cute
Sensei! Koi No Shitsumon Desu!