Recently, a trendy dark gym opened in the town where the Hojo couple lives. Maki decided to go there immediately to relieve stress, but the reality of the dark fitness gym was a wicked gym that puts sensitivity-100x drugs into the wives' drinks and devours them. On the first day, Maki, who was immediately drugged, had an excellent effect. Maki, who mistakenly thinks that her libido has increased from exercise, invites her husband home, but her tired husband won't even look at her. And then, a devilish hand attacks Maki, who visited the dark gym again without knowing anything…
