| Tadasugawa Rei糺川 礼 |
| Measurements | Bust-Waist-Hips: 87-59-80cm |
| Birthday | 13 February |
| Hair | Braid, Brown, Parted to Side, Sidehair, Waist Length+ |
| Eyes | Brown, Tsurime |
| Body | Big Breasts, Pale, Slim, Teen |
| Clothes | Armband, Body Ribbon, Bra, Cuffs, Dress Shoes, Gloves, Hairpin, Leg Warmers, Miniskirt, Pleated Skirt, School Uniform, Shrug, String Ribbon Tie, Thigh-high Stockings, Vest |
| Items | Dual-Wield Weapon, Handgun, Knife, Tablet Computer |
| Personality | Brave, Disciplinarian, Hotblooded, Pervert, Short-tempered, Strict, Stubborn, Watashi |
| Role | Discipline Committee Leader, Friend, Not a Virgin, Schoolmate, Senpai, Student Council Member, Twelfth Grader |
| Engages in | Dimensional Travel, Fighting |
| Visual novels | Main character - Nukige Mitai na Shima ni Sunderu Watashi wa Dou Surya Ii Desu ka?
Main character - Nukige Mitai na Shima ni Sunderu Watashi wa Dou Surya Ii Desu ka? 2 |
| Voiced by | Mizuno Nanami |
DescriptionA third-year student who is the "military tactician" of the "SS" committee, or in other words, controls their members. She doesn't tolerate people who break rules, and always tells the protagonist, who often runs away from Rei, that corridors are the perfect places to have sex at, among other things. |