Responses
I'm not sure if you are referring to this one:
http://www.mangago.zone/read-manga/cherry_na_teacher/ (done by ex-student)
http://www.mangago.zone/read-manga/hatsukoi_monogatari_fukai_youki/ (uke nearly raped by uke's student)
sadly it isn't the right one, but you're right, the storyline is nearly the same, so thank you a lot anyways ^^
I can't remember the title, since I read the story a while ago, but it was about two teachers who ended up together and in one chapter the uke teacher was molested by a student and the seme teacher saved him.
I'm sorry that I can really remember the plot but if you know the title of this Yaoi manga please let me know (=・ω・=)
Thanks a lot!