Nico also known as inmate number 25, He is an inmate of Nanba Prison where he is held in building thirteen,. Arrested for unwittingly buying and selling drugs in the slums, he is a sickly individual who is dependent on medication for survival. Nico is a very sickly individual who is dependent on medication for survival. While he initially hated medicine due to his phobia of the injections needed to take it, he is provided with oral medication in Nanba prison which helps him stay stable