YUJ-047 Teacher, Please Teach Me A Blowjob After School.Nanami Nami

I've lived my life without knowing the meaning of the word "fellatio" until recently.Everyone around me knew, and I was treated as a bit of an outcast.I wonder how I can learn more about "fellatio"...I can't tell anyone about this problem.I wonder if Mr. Tanaka, my homeroom teacher, would understand my troubles...?