Rai Nagamori, who is experienced with a different style of shamisen, joins the club as they are set to enter the Matsugorou Cup as a team. Setsu becomes the club's teacher, but frustrated by the club's inability to produce a decent sound, as well as his unwillingness to lower his standards for them, Setsu quits the role. Setsu returns home and is greeted by Umeko, who is pressuring Setsu to enter the individual competition of the Matsugorou Cup causing him to get in an heated argument. The next day, Setsu apologizes to Shuri, and Koyabu brings in Seiryuu to teach the club and give them advice...