Ririchiyo frets over her upcoming coffee date with Sōshi. In the afternoon, Ririchiyo cleans up her room, then decides to study with Karuta and Watanuki for an upcoming quiz in their class while the agents monitor them. Natsume creates a series of "partner games" for everyone, guessing what is inside the mystery box and taking a partner quiz, yet Sōshi gets carried away with both of these. A series of commands have appeared in the mansion causing quite a stir. It just so happens that Kagerō was the one behind this.