Kenichi is getting more and more suspicious here, as his family is getting worried with his training in that mysterious dojo. His little sister Honoka is very concerned with his brother and tries to stop him from going to the place again. Lately, his eyes have become soulless each time he is back from Ryouzanpaku.Honoka secretly snuck into his brother’s room found a map which leads to the dojo grounds. So, she decided to spy on his brothers. At the dojo, she sees his brothers having body training by Miu with a weird machine. He is actually to improve his body flexibility but what Honoka really thought she saw was the busty Miu was seducing his brother with her alluring body.