Main character was used to be a normal taxi driver until he opens Pandora's Box. After opening said box, he gets infatuated to the point that his main objective is to violate 5 female passengers with different jobs, ranging from High School Student, Miko, Violinist, Office Lady to Waitress not only in the taxi but also your house or even public places like the park or places they belong to.

A Rape simulation game where you control a taxi driver and manipulate 5 passengers in order to bring pain to them and convert into pleasure by violating them, it also includes animated h sequences that'll drag you to an unknown world.

It was originally going to be titled Sha prior development but was renamed to Hako no Naka no Etsuraku during it's final state with animations and a more polished artstyle.