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 am a man who detests 
pointless affectations!
Ich bin ein Mann, der sinnlose Gefühle ablehnt.
¡Soy un hombre que detesta 
las atenciones innecesarias!
¡Soy un hombre que detesta 
las atenciones innecesarias!
Je déteste
tout ce qui est inutile !
Eu sou um homem que odeia 
afeições inúteis!