SCOP-398 Breaking through the red-light district regulations! The secret area where young wives perform crazy acts in the underground of Sekigaya's high-class residential district! Beyond the original NK, a new NK style that even makes HonSalo look pale!

The term 'NK flow' was born from the destruction of Nishigawara. It seemed like the underground sex industry had been destroyed as well! However, in 2016, a report emerged on a certain large bulletin board that an area had revived despite red-light district regulations!!! And it's none other than Setagaya Ward. Rumors say that wealthy wives with too much time on their hands are gathering and secretly turning their basement into a place for full-service salons!!! Even the authorities are shocked!!! Who would have thought that a full-service salon was operating in secret in a corner of this high-end residential area?!