Fukabori Sumiyo
深堀 純代
| Fukabori Sumiyo深堀 純代 | |
| Measurements | Height: 170cm |
| Birthday | 10 October |
| Hair | Braid, Brown, Long, Parted in Middle |
| Eyes | Brown |
| Body | Overweight, Pale, Teen |
| Clothes | Hair Tie, Sailor School Uniform, T-shirt |
| Personality | Food Lover, Reserved, Stoic |
| Role | Eleventh Grader, Kouhai, School Mahjong Club Member, Senpai |
| Engages in | Mahjong |
| Visual novels | Main character - Saki Portable Side character - Saki Achiga Hen episode of Side-A Portable Side character - Saki Zenkoku Hen |
| Voiced by | Saiga Mitsuki |
DescriptionSumiyo is a second-year at Kazekoshi Girls' High School. She is a rather quiet individual and rarely talks outside of her matches. She is not shown doing much but standing in the background with her teammates. | |