Tora character quest

[Black]

On the instructions of Oswald, 88 chips are needed, in the amount of 500 pieces. Do you guys know any painless ways to get them in such quantities?

[Basterbane]

You can get them by failing to upgrade lvl 88 items. Thats the not-so-luck based option.
Alternative is Tiburon's rock, paper, scissors game on gigante island ( near Rosa character). You can bet lvl 92 and 96 chips and hope for a draw. When you get a draw with Tiburon in the game you gain chips of lower tier. Draw with lvl 92 chips and you get your lvl 88's. You can also win by betting lvl 80 and 84 chips.