Sekine invites Chiyo to a sleepover at her house, and the other two invite themselves as well. They deepen their bond while Rikka learns more about the quirky cultural activities that take place on Earth.
What's the surprise for, anyway?
Aber wozu die ganze Aktion?
Comunque, perché hanno organizzato uno scherzo?
Mas por que fazer uma pegadinha?
Интересно, для кого сюрприз?