Easiest way to train
When Gohan has to get the z-sword in the fork in the road either up or right (you start from the left) go left as far as you can and there should be a rock destroy it for a z market buy the kiliton armbands and kiliton boots then get the z-sword and go killing enemies and your exp will go up fast.
Also equip the Kiliton stuff to one person then fuse then train so you are training two people at once.
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