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.
Oh, the Colonel doesn't 
know what a takopa is.
Richtig, der Oberst weiß nicht,
was ’ne Takoparty ist.
Oh, il Colonnello non sa cosa sia un takopa.
Ah, a coronel não sabe
o que é takopa.
А, полковник не знает,
что такое такопраздник.