Trippers -Kanojo to no Gakuen Seikatsu wo Hakai Suru Ittsuu no Tegami | Trippers. -彼女との学園生活を破壊する、１通の手紙-

An innocent couple of having begun just to associate, Mochida Eiichi and Tsukimura Kaede. Having entered the same librarian association is an acquaintance in the edge, it confesses from Kaede while deepening relations. Eiichi accepts it and became a pair of lovers.

However one day an email to threaten such relation arrives. [If wanting no distribution of this photograph, the instruction is heard★] Contrary to the playful end of a word, image from which two change of clothes appearance clearly is attached. Furthermore the order contents, an obscene thing with a high hurdle in the couple of just association.

Result of caring for each other, two accept what the invisible threatener who doesn't see the purpose says helplessly. However while digesting the instruction, eiichi did not notice, intense sexual desire that whirls to the bottom of heart will raise.

And involving Nanjou Mayumi who is the childhood friend of Eiichi and is the national language teacher of the school, the situation escalates... Binding from Eiichi has come off without returning.