Omori has the world's rarest illness, "Hanabusa Disease."
Hanabusa Disease causes flowers to suddenly bloom from the body. After one hour, they scatter.
The flowers that bloom from Omori are incredibly beautiful. So much so that the flowers blooming from Omori are the most beautiful of all. However, behind that beauty, he is prone to falling ill. The pain also varies depending on the location.

Such is Omori, who is active as a member of Mrs. Green Apple alongside Fujisawa and Wakai.