Many years have passed. The surviving ninjas are in hiding, and Hachirou has disappeared. The Joujinshuu have yet to return, but can these days of relative peace last forever?
And if that "sometimes" was 
at an important time?
¿Y si pasara en un momento crucial?
¿Y si pasara en un momento importante?
Parfois seulement.
Ma se una di quelle volte...
E se esse "de vez em quando"
for num momento importante?
А если это «иногда» случится в бою?