Sumi Noriko
純 紀子
| Sumi Noriko純 紀子 | |
| Aliases | Don-chan |
| Hair | Ahoge, Braid, Curtained, Parted in Middle, Spiky Bangs, Waist Length+, Wavy |
| Eyes | Brown |
| Body | Big Breast Sizes, Pale, Slim, Teen |
| Clothes | Blouse, Hair Tie, Kimono, Microskirt, Naked Apron, Panties, Ribbon Hair Tie, School Uniform, Thigh-high Stockings |
| Personality | Brave, Friendly, Serious, Short-tempered |
| Role | Daughter, Girlfriend, High School Student, Older Sister |
| Engages in | Drinking, Teasing |
| Subject of | Teasing |
| Visual novels | Side character - Sakashiki Hito ni Miru Kokoro Protagonist - Don-chan ga Kyuu |
| Voiced by | Maki Izumi |