A young man named Makoto falls into hell, where he meets Yonoko — a sexy and mischievous demon girl who takes pleasure in torturing humans. Makoto is subjected to what could almost be called a “rewarding punishment” as he and Yonoko embark on a journey across the eight great hells, visiting their most infamous torture sites over the course of a trillion years. However, when it’s revealed that Makoto is a descendant of Momotarō — and that torturing him brings demons to ultimate ecstasy — his fate takes a wild turn! Soon, not only Yonoko but all the beautiful demon girls in hell set their sights on him! A pink-colored erotic comedy with a cute and devilish demon girl ♡ IN(fernal) HELL!!!