Koharu is a naive and delusional young girl with a good heart, while her skills allowed her to become a part of the Justice Realization Committee. However, because of her stupidity and delusional behavior she is often set back. Because of her delusions, she would believe that Sensei has sexual fantasies towards her that she denies having. However, beneath it all she is a dependable person who provides lighthearted banter and a springboard to bounce off of for the Supplementary Lesson Department Koharu has pink eyes and pink hair with bangs that cover her forehead. Her hair is styled into two chest-length twintails by red ribbons, which also frames her face. She has crow-like wings on her head and lower back, thick big legs, Koharu's halo consists of a pink outer ring with features similar to her wings and a simple inner ring. Koharu wears a black bikinis