| Shimizu Sora清水 空 |
| Hair | Ahoge, Blunt Bangs, Bob Cut, Brown, Short |
| Eyes | Brown, Tareme |
| Body | Big Breasts, Pale, Slim, Teen |
| Clothes | Hairpin, Off-The-Shoulder Sweater, Pleated Skirt, Ribbon Tie, School Uniform, Sweater |
| Personality | Brother Complex, Family Oriented, Kind |
| Role | Non-blood-related Sister, Older Sister, Triplet+ Sister, Twelfth Grader, Younger Sister |
| Engages in | Reading |
| Visual novels | Main character - Ane wa Tsurezure Naru Mama ni ~Otouto no Ecchi na Osewa wa Ama-Ero JK Sisters ni Omakase!~ |
| Voiced by | Momochi Ruka |