Igarashi Mitsuomi
五十嵐 光臣
| Igarashi Mitsuomi五十嵐 光臣 | |
| Hair | Ahoge, Grey, Short, Spiky |
| Eyes | Blue, Hosome |
| Body | Pale, Slim, Young-adult |
| Clothes | Glasses, Hakama, Lab Coat, Tabi, Zouri |
| Role | Older Brother, Scientist |
| Subject of | Insanity |
| Visual novels | Side character - Appare! Tenka Gomen Side character - Appare! Tenka Gomen [Matsuri] ~Koi to Arashi wa Ooedo no Hana~ |
| Voiced by | Atono Matsuri |
DescriptionAya's older brother who is a mad scientist. | |