Hina is a 4th year college student who came as an educational trainee. Without knowing that a desperate future is waiting ... Mihina, who was used as a teaching material by the principal who is a special adviser of the Department of Deep Throating, a specialized department that learns throat orgasm, is stripped of even human dignity by a perverted throat learning plan that is repeated every day and commits the throat ● It becomes just a lump of meat that can be eaten ... However, Mihina who endured the distorted mockery eventually suffered more pleasure than she could taste in the back of her vagina ...