Rihaku
The Internet
Hazou can only throw one seal per round, so this is something of a misuse of his combat skills, since the combat is likely going to take 3 rounds or less. Same with carrying their ninjutsu spec, Hazou should be attacking and inflicting Consequences if he can, and drawing fire and tanking hits if he can't. Otherwise he won't unstagnate, and it is modestly less useful for him to be doing this.
I feel like stagnation should be a very far second priority compared to not dying. If Hazou has 3 Dog jounin with him, then sure. If he doesn't, then priority one is to avoid being slaughtered by the Leopard jounin.
I don't think it will take actions for Hazou to be carrying the chihuahua on his shoulder on in a chest pouch.