Part
Minute, Divide
The fins that fell onto my sword were sliced into many parts. Following this logic, this also means minute, which is part of an hour, and divide, which is the action of splitting something into many parts.
ぶん, ふん, ぶ
わ
None
Now that the fins have been cut into neat parts, it's time to cut something else: buns (ぶん).