| Koimizu Tsuki恋水 月A |
| Measurements | Height: 158cm, Bust-Waist-Hips: 85-49-82cm, C cup |
| Birthday | 11 October |
| Hair | Ankle Length, Blue, Curtained, Parted in Middle, Spiky Bangs, Twin Tails |
| Eyes | Tareme, Violet |
| Body | Big Breasts, Pale, Slim, Teen |
| Clothes | Bell (accessory), Detached Sleeves, Miko's Dress, Mini-dress, Necktie, Pendant Necklace, Ribbon Hair Accessory, Rubber Band With Beads, School Uniform, Thigh-high Stockings |
| Personality | Airhead, Docile, Honest, Naive, Watashi |
| Role | Miko, Non-blood-related Daughter, Yamato Nadeshiko |
| Visual novels | Main character - Henshi~n! 2 |
| Voiced by | Haruse Miki |