Rico

She has white hair. One gash is blue, the other is red, and she has a rather sweet smile on her face. Dressed in a black and white maid uniform, also with black socks and shoes.Using the key, you open the basement, and there you take the gun.
When you shoot Riko herself, everything around you will go dark, and Riko will appear all black, with white skin, with a scary face and a knife in her hand. A red glow emanates from it, and the song plays: you are idiot