The owner of Minamikaze has invited the girls of Lemon to his home, once there the mood changes drastically.  How can the girls escape?  Squid Girl is suffering from amnesia and everybody is trying to convince her she is an alien, girlfriend, or sister, but what about invader?  The Invasion Club has been formed, join and watch how they systematically invade the city.
I thought you only had one of these!
Ich dachte, du hast nur eine davon.
¡Pensé que solo tenías una de esas!
¡Pensaba que solo tenías una de esas!
Vous possédez combien
d’exemplaires de ce prototype ?
Pensei que você só 
tinha feito um desses!