Both star eccentric geniues that are no affilated with the detectives professional, but help them solve cases. Ataru centers more general cases instead of cases with weather elements.
Other than both starting with the letter O, both dramas deal with the dead, whether or not it is trying to fulfill last wishes or solving murders. In relation to the characters, both have headstrong protagonist female leads also stringing the male protagonists (with vastly different personalities) along.
