A mysterious insect man, Sarutobi Sasuke, appears in Edo.  The city is in danger but the City Patrol Group is nowhere to be found.  The Shrine and Samurai House patrol groups fight back, but are overwhelmed.  Just when everything seems lost to his speedy attacks...!?
If we let a single one survive, 
they'll go elsewhere and split again.
Si dejamos que escape uno 
solo, irá a multiplicarse.
Si dejamos que se vaya alguno, 
podrá escapar para duplicarse de nuevo.
Se deixarmos ao menos um sobreviver, eles 
irão se dividir em algum lugar de novo.