Kaida Atsuko
火井田 敦子
| Kaida Atsuko火井田 敦子 | |
| Hair | Red, Shoulder-length, Thick Eyebrows |
| Eyes | Amber |
| Clothes | Hairpin |
| Role | School Martial Arts Club President, Twelfth Grader |
| Engages in | Karate |
| Visual novels | Main character - Kuro Mahou Shoujo Sadistic Youko |
| Voiced by | Ayukawa Hinata |