Nakajima Atsushi is an 18 year old boy in the Armed Detective Agency. He has light grey hair with loose and swept bangs and a black streak on the long piece of bangs. His eyes have segmental heterochromia, his eyes purple on the top half of his iris and yellow on the bottom half along the bottom curve of his eyes. He possesses the abillty called "Beast Beneath the Moonlight." With that, he can transform into a tiger, partially or fully. His height is 170cm (5'7"), and his birthday is May 5th.