Recently, a trendy dark gym opened in the town where the Hojo couple live.Maki decides to go to the gym right away to relieve stress, but the reality of Dark Fitness is that it is an unscrupulous gym that uses 100x sensitivity drugs in the drinks of wives.On the first day, Maki was given medicine right away, and the effect was excellent.Mistaking her sexual desire to have increased through exercise, Maki returns home and invites her husband, but he is tired from work and doesn't even look at her.Then, Maki, who visits the dark gym again without knowing anything, is attacked by evil hands...
