After the Nationals, Seigaku goes on a trip to Osaka for the purpose of training with Shitenhouji. Meanwhile, back in America, Ryoma re-encounters with Ryoga, whom he sees training in a slum.

The story of Hyōtei's Third year regulars when they first entered middle school.

When Momoshiro and Kaidō lose their cool while training the first and second years and Ryōma returns from America to Osaka.