Yuki hides Ryōko in a box just before Haruhi, Mikuru, and Tsuruya arrive at her apartment to make Valentine chocolates. Haruhi's plan to create a life-size chocolate version of Mikuru is deemed impossible, so the girls pass the time fashioning chocolate sculptures, with the leftover chocolate used to make truffles (which are immediately gobbled up by Yuki). After her visitors leave at the end of the day, Yuki lets Ryōko out of the box, and shares a small chocolate cake with her.