NES Classic Edition
There are multiple internal names embedded throughout the NAND, but it isn't clear what they are for.
This also exists in in the DS Virtual Console. Hanafuda is a card game/set of playing cards.
There are many instances of this here. There is a single instance of this in the Super NES Classic Edition. Hachihachi (not kachikachi) is a variation of the card game Hanafuda.
There are many references to this here and in the Super NES Classic Edition. Hagi, or bush clover, is one of the cards in Hanafuda.
The controller is referred to internally like this. This also exists in the the Super NES Classic Edition.