Ren has black and grey eyes. Ren Amamiya, the 18-year-old high school detective known as "The Detective Prince," presents himself as well-mannered, friendly, and charismatic. However, his cheerful demeanor is merely a facade concealing his cold and unpleasant personality. His haunted childhood forms the basis of his misanthropic worldview and deep self-loathing, which he reveals only to NOBODY. Has killed many under the order of a corrupt politician exploiting his ability, which he resents.