@coolboymew the character nudity is a hack yeah but there is two other places where there is nudity in the game. The first is one of the endings where she's a high class mistress, she's naked getting out of the bath, and when she's very young you take her on a vacation to the oceanside and she's playing in the water naked with her rear end exposed.

The way the nudity is in the English version is that the game is implemented where the outfits are layers. You can disable outfits and then she's naked. But as you mentioned yeah it's a debug menu.