if it was made with MODERN japanese design sensibilities, the cast would be lolis, and the dialogue would read like:
[LONG-ASS LOADING SCREEN, THEN TWO ELABORATELY DRAWN ANIMU HEADS APPEAR]
KACHUA: oooo, i am so silly and forgetful! i seem to have gotten us lost in the walstanian forest!
DENIM: <sweat bead> ohhh, that's my sister
KACHUA: denim! did you...are you looking at my panties?
DENIM: n-nnnnoooo! it was an accident! w-w-whoaaaa
DENIM trips and falls into KACHUA's orb-like breasts
KACHUA: onii-san is a pervert!!!! <hits him>
JAPANESE GAMERS: HYUCK HYUCK HYUCK SNORT <start masturbating>