Responses
There are too many I didn't get the story but maybe you will find something in this
http://www.mangago.me/tag/teacher+x+teacher/
This one maybe?
http://www.mangago.me/read-manga/cherry_na_teacher/
found it, thanks
What's the title?
I'm looking for a yaoi manga that's about a sensei that's kind of tsundere and he has his lover who is also a teacher, hope you can help me.