Tied up and ascend with your anus. It's a path to lustful hell

Born and raised in a wealthy family, he married an elite trading company employee. Fumiyo (Matsu) lives without any inconvenience. Meanwhile, his neighbor, Reika (Kanno), who has worked in the sex industry after an unfortunate childhood and finally finds happiness, hates naive young lady like Fumiyo. She feels a sense of purpose in life by bringing an innocent married woman to pleasure hell with her husband, who was a customer of the store. When Reika learns that Fumiyo's husband is on a long-term business trip overseas, she plays a play to fuck Fumiyo, and Fumiyo falls into a trap...