Tanaka and Miss Shirasaki's happy life together continues, but Tanaka's worried that he's starting to put on weight. Determined to be a worthy partner for Miss Shirasaki, he decides to take up jogging every morning—accompanied by Miss Shirasaki in some very eye-catching sportswear! Their new fitness routine is going smoothly, but when Miss Shirasaki debuts a new summer uniform, Tanaka might not be able to keep his mind on exercise much longer...