Twoearle answers Soji and Aika's questions about the Tail Gear, including why Soji turns into a girl. Twoearle proposes building a secret support base under Soji's house, but to do so entails serious consequences for Soji's living condtions!

The Twin-Tail Club is just about ready to start, and Twoearle gives the club's classroom her own touch. With Ultimaguil on the ropes, some new reinforcements arrive to try to turn the tide, but the Twin-Tails add a reinforcement of their own.

Soji awakens to find himself in the form of Solar Metca, a slightly more grown-up version of Tail Red. He also comes up short in combat with an Elemelian, and the others become concerned about him...