Yamamoto

Yamamoto (山本, Yamamoto) is one of Light Yagami's friends from high school, and eventually becomes a member of the Japanese Task Force.

Plot
He and Light's other, unnamed friend from high school would often discuss Kira with Light. The two of them gradually grow to become Kira supporters and believe that the deaths of criminals will be for the betterment of society.

Yamamoto also possibly appears in chapter twenty-eight among a group of Light's friends hanging out in Aoyama. There is a person who looks like him, though Light never addresses him by name, so it can't be said for sure. If it is in fact Yamamoto, that means he also appears in episode thirteen of the anime.

Yamamato eventually joins the Task Force within the year after Light died. As revealed in chapter 108, he and Matsuda share a friendship. According to Matsuda, they've gone drinking together, apparently more often than Yamamoto would like. Yamamoto also makes an appearance in the One-Shot Special.

Quotes

 * "We should be going into a more peaceful era now." (Chapter 16: Handstand)
 * "Matsuda-san, please stop talking like people dying is actually a good thing." (Death Note One-Shot Special)