A girl is worried about the d*ck of her fiance, as it's quite important to her... Then her teacher, who has a giant c*ck (and is also a shota) gets involved...
A new type of sexual education had been introduced into the school curriculum. An official and legal mating relationship between a creep and a beauty begins...
A junior girl who is in love with her senior is blackmailed and disciplined by an evil teacher. Her rationality is gradually broken and sensuality flows forth...