|Manga||Kakumeiki Valvrave (Manga)|
|Anime||The Revolutionary Transfer Student|
Nobu, real name Sakagami Masanobu or Kazemoto Nobuteru in the manga, is a friend of Raizo Yamada that dies during Dorssia's first attack on Module 77. His death is what motivates Raizo to pilot a Valvrave for revenge. (Season 1: "The Revolutionary Transfer Student") Raizo names Valvrave III "Nobu Lightning" in his honor.
Before Nobu was a student at Sakimori and met Raizo, he was a famous delinquent but at Sakimori he put his energies into studying.