春咲 日向子

The protagonist's younger sister, the same age as him. Always cheerful and full of energy, she quickly becomes friends with anyone. She's no good at studying, but she has a keen sense for sound. And so, despite originally wanting to be a voice actress, she's also good at composing music. As the protagonist and his sister, she naturally ended up joining the PC gaming club. She is attracted to the protagonist as a member of the opposite sex, and in fact often masturbates using him as a sexual aid... Although she is very innocent, she likes erotic stories and has quite a bit of knowledge about them.