In the beginning of a Bout of Honor, a little side note comes from the right side of the screen. On it, it says "Earn Charon coins/tokens" I know it's just to jazz up the side note. But if in the next update, SSM could implant these to be an actual thing to buy new items/armor/weapons?
Charon was the Ferry man of the River Styx in Mythology. The only way to gain safe passage from tarturus on his vessel was to pay him with the coins laid on your eyes during burial. In short every token is a Charon token.