While trying to settle into his new life, Kimito runs into child prodigy Hakua Shiodome, a shy girl who writes complex equations wherever she finds convenient, and Karen Jinryo, a self-taught sword master who challenges him to battle.

The Commoner Club members learn about maid cafés, and take over the cafeteria in a practical exercise to learn more about what maid café maids do. When Sakimori learns of Kimito's affinity for maids, she invites him to Hakua's lab.