That Encounter at the Carnival...When Ai visits Akari for Neo-Venezia's Carnevale, she helps out at Aria Company. Before the festival starts, she sees President Aria leave by himself, and Akari tells her he'll be gone for the duration. On the first day of celebrations, Akari and Ai meet Casanova, the mysterious masked master of ceremonies of the Carnevale named after the historical figure. Later, on Ai's last day on Aqua, while talking with Aika and Alice they spot one of Casanova's attendants. They chase after him but Akari and Ai get separated from the others. Eventually they confront Casanova, who invites them to join his cheering procession for a while...