Aizawa, Shuuichi

相沢周市

Using the alias Aihara within the investigation team, Aizawa leaves the group but stays in the police force after L gives the members the option to quit. He continues to assist the investigation team when necessary as a police officer. After L dies, Aizawa returns to the investigation team to work under Light. When he hears that the 13 days rule (see the written rules of the Death Note) is false, he starts to suspect that Light is actually Kira and contacts Near. Aizawa passes certain information to Near that leads him to deduce Kira's real identity (i.e., Light), and Near briefly holds him at the SPK headquarters. Near agrees to release Aizawa and Mogi afterwards. In the finale, he becomes the leader of the investigation team.
Aizawa has a wife and two children; his daughter is named Aizawa Yumi and his wife is named Aizawa Eriko.