ref: ce35f2f7a1d72c3404e3c7953cdaa10a0cff00e8 dir: /data/key_items.asm/
KeyItemBitfield: db %11110000 db %00000001 db %11110000 db %01001111 db %00000000 db %10011111 db %00000000 db %11000000 db %11110000 db %00111011 db %00000000