The 19th installment is set in Nishi-Kawaguchi, one of Saitama Prefecture's most popular hot spots. When Kajiyama visits a Chinese restaurant on business, the owner invites him to do some tai chi. It appears the restaurant operates as a "hybrid"—a Chinese restaurant at night and a tai chi class during the day. As he accepts the invitation and practices tai chi, a man named "Chen" appears, claiming to be the founder of "Monmon Tai Chi." Kajiyama is stunned by the erotic moves, but when he sees the extremely sexy-dressed female participants performing intense erotic moves influenced by Monmon Tai Chi, he can't help but leave the restaurant like a gust of wind. He then heads to "Hybrid Health Nishi-Kawaguchi," a place that combines aromatherapy erotic massage with intimate health.