A few years after giving birth, Misako, a married woman who has lost her figure and suffers from hyperhidrosis, decides to go to a personal gym. A few minutes after drinking the herbal tea recommended by her personal trainer Oki, who says it will boost her metabolism, Misako notices something strange happening to her body. (Her body feels hot…) However, Misako returns to the gym a few days later. She can’t forget that sensation… As the aphrodisiac spreads throughout her body, Misako arches her back and climaxes in a trembling motion, looking both sexy and beautiful.