| Oomiya Arina大宮 アリナ |
| Hair | Ahoge, Blond, Spiky Bangs, Straight, Waist Length+ |
| Body | Bat Wings, Fang, Horns, Pale, Pointed Ears, Slim, Teen |
| Clothes | Ankle Boots, Decorative Belt, Headband, School Swimsuit, School Uniform, Shimapan, Sports Uniform, Tank Top, Thigh-high Stockings, Uwabaki |
| Items | Scythe |
| Role | Class President, Demon, Friend, High School Student, Mahou Shoujo, Orphan, Princess, Schoolmate |
| Engages in | Dimensional Travel, Henshin, Volleyball |
| Visual novels | Main character - Saikyou Mahou Shoujo Arina |
| Voiced by | Minase Saki |