Kōjiro has an incident in a public setting that places his teaching prospects at Muroe High School in doubt. With the rest of the club he resolves to get to the Nationals (or some similar honour) in an attempt to improve the club, gain distinction and save his teaching position. A weary Tamaki nears the end of her part time job filling in for Miyako. Then a suspicious customer arrives.
慣れない仕事にはげみながらも、部活のことが気になる珠姫は、アルバイト終了後道場に駆けつける。珠姫と共に次の大会に向けて盛り上がる剣道部の面々、しかし、帰宅前に虎侍が買い物に立ち寄ったスーパーで虎侍と剣道部の運命を大きく左右する事件が起きてしまう…
