After Siren tricks Hibiki into getting another fight with Kanade, the two discover they have been entered into a 'Best Friends' tournament. Wanting them to make up, Hummy suggests that they each spend a day in each other's shoes. As such, Hibiki spends some time with Kanade's family while Kanade stays over at Hibiki's house, where she starts to understand some of Hibiki's loneliness when her busy parents aren't around. With the two making up with each other by the next morning, Siren attempts to spoil their friendship, saying she shouldn't stay with Kanade.