Hiiro
ヒイロ
| HiiroヒイロB | |
| Measurements | Height: 170cm |
| Birthday | 5 June |
| Hair | Ahoge, Blond, Brown, Curtained, Parted in Middle, Short |
| Eyes | Green |
| Body | Pale, Slim, Teen |
| Clothes | Jacket, Necktie, School Uniform, Shirt, Trousers |
| Personality | Arrogant, Confident, Rude, Shy, Smart |
| Role | Antagonist, High School Student, Honor Student, Shinigami |
| Visual novels | Side character - Re:Birthday Song ~Koi o Utau Shinigami~ |
| Voiced by | Nishida Masakazu |
DescriptionA student with excellent grades, Hiiro has absolute confidence in himself. For some reason, he treats the supplementary group members hostilely; egging them on and getting in their way. Hiiro has a mean-spirited personality. | |