DASD-907 — I've Been Trained In Deep Throat So Much That My Throat And Tongue Are So Sensitive That I'm Going To Suck My Teacher Again Today.

Taichi and Kotone, who have been together since their high school days, are now university students living together. Kotone is majoring in biology, but she has not kept up with her studies and has been told that if she fails, she will definitely have to repeat the year. Unable to talk to her boyfriend about it, Kotone reunites with her former teacher from high school.