An idea registers in Ryotsu's mind in the heat of the moment. Their deaths would be hard to pin on him if they only suffered bite wounds, though Mr. Plugg would probably blame him for not clearing out all the rats. Still, the end result will be much better.

Spoiler: OOC
Show
Taking a 5 foot step towards Fipps and biting at him

(1d20+5)[11] crit on 20 (1d20+5)[24]
(1d4+1)[3] crit (1d4+1)[2]

Parry: (1d20+5)[19]

Counter: (1d20+5)[9] crit 18-20 (1d20+5)[22]
Damage: (1d4+1)[2] crit (1d4+1)[5]