The Gang of four.

Sakura is banned cuz you want to put a needle in the fox!!

acca-sama is banned because

Ren is banned cuz don't worry, the fox is a protected specie.

Accatone is banned because

Ken is banned cuz oh yeah sensei, she's gonna be all mine this way
it's been long since we last spoke Ken.

sakura is banned because *looks around*

Rena is banned because

Ken is banned cuz he looks dumb when all is he does is being interrogative.

Accatone is banned because may be.

Ken is banned cuz had he lost his tongue?