Hmm, so she can just mute you when you're misbehaving.

[ What a powerful familiar. However, surprisingly.. Midorima seems to relax a little, looking over at his tanuki. The fact that Vila is powerful means that the tanuki is likely powerful in its own way. ]

Then you may be genuinely lucky.

[ Tanuki are known, after all, for being extremely lucky. That makes Midorima significantly less stressed. ]

You have all eight signifiers for the luckiest forms of tanuki.