Hi, thank you for your suggestions for the game.
1. I don't plan to add detailed customization of Oni before the game starts, as this is a story-oriented game. Another important factor is that I'm doing everything for the game myself and I don't have much experience in game development. Therefore, I have to take into account my capabilities and the time I will spend on adding new things to the game. I don't want the game development to go on forever.
New hairstyles (as well as costumes) will be added to the game gradually in future updates.
2. and 3. Unfortunately, I can't justify this with the game's plot. You can undress the main character in the first minute of the game.:-)