Usually, Mokou should be the one on the leash, but... hakutaku Keine makes her worry sometimes.
"Mokou, sweetie! I do NOT have a problem when I'm like this!"
She says, having used her incredible strength to push over an ice cream truck, toss the workers out of it, and is now crawling on all fours as she stuffs everything she can eat past her lips.
...
And she's growling whenever Mokou reaches for some too.