| Kashiwaba Yuki柏葉 結生 |
| Hair | Black, Short, Spiky Bangs, Straight |
| Eyes | Hidden |
| Body | Pale, Slim, Teen |
| Clothes | School Uniform, Shirt |
| Items | Gaming Console, Laptop, Mobile Phone |
| Personality | Distrustful, Ore, Otaku, Pervert, Reserved, Romantically Indecisive, Sister Complex |
| Role | Classmate, Eleventh Grader, Grandson, Living Alone, Lonely, Older Brother, Part-time Worker, Twin Brother, Unpopular, Waitstaff |
| Engages in | Breaking the Fourth Wall, Bridal Carry, Martial Arts, Online Chatting, Sexual Abstinence, Skipping School, Unarmed Fighting |
| Subject of | Child Abandonment, Seduction, Teasing |
| Visual novels | Protagonist - Heroine wa Tomodachi Desu ka? Koibito Desu ka? Soretomo Tomefure Desu ka?
Protagonist - Heroine wa Tomodachi Desu ka? Koibito Desu ka? Soretomo Tomefure Desu ka? W (Double) |