It's subtle, it's not easy to make a girl more attractive with clothes on than without clothes. This game is perfect when you want to make your manga female characters sexier but don't want to draw them completely nude.
I think that's a correct opinion. However, in this game, when you put on clothes, your skin changes from machine-like to real human-like. I was surprised there. 〜From Google Translate〜
When the main character removes his equipment, you can see that he has a machine-like body. In other words, it may not have a gender. 〜From Google Translate〜
