I heard that on your first day in prison, if you go crazy and become a super saiyan, no one will mess with you. This kind of kills any good-behavior early release, though…
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must be some bitchin applesauce.
Apparently amongst the things that cause Vash to go super saiyan are as follows: Dropping his sword, Having his brother die, getting hunted, and now not getting someone elses applesauce.
Well it WAS cinnamon applesauce.
So Vash is twenty seven. That's pretty old for a wolf, but not all that old for a saiyan. I wonder if age has taught him anything…