Recently, Kotaro started exercising because he wanted to meet a beautiful woman with huge breasts running around his house. At his wife's recommendation, he also attends a hot yoga class. Surprisingly, the instructor in that classroom was the example of a beautiful woman with huge breasts. After that, if you close the distance in the mixed bath sauna and end up in a relationship, you will continue to pile up your body while getting sweaty. Kotaro enjoys going to yoga classes every day, but one day when he comes home, he is introduced to his wife's friend as an instructor.
