Katakura Ryouko
片倉 涼子
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| Katakura Ryouko片倉 涼子 | |
| Aliases | 鉄仮面 |
| Measurements | Bust-Waist-Hips: 85-56-87cm, D cup |
| Hair | Blond, Long, Parted in Middle, Ponytail, Spiky Bangs, Straight |
| Eyes | Violet |
| Body | Big Breasts, Pale, Slim, Young-adult |
| Clothes | Bun Covers, Cupless Corset, Fingerless Gloves, Garter Belt Stockings, Ribbon Hair Tie, Slave Collar |
| Personality | Atashi |
| Role | Teacher |
| Visual novels | Main character - 12nin no Onna Kyoushi Re-Innovation -In- Main character - 12nin no Onna Kyoushi Re-Innovation -San- |
| Voiced by | Kasuga An |