Yamane

[Kenji](https://anilist.co/character/3442/Kenji-Endou)'s classmate and friend of [Fukubei](https://anilist.co/character/21461/Fukubei-Hattori) and [Sadakiyo](https://anilist.co/character/27225/Sada-Kiyoshi). He became a bacteriologist that worked with [Kiriko](https://anilist.co/character/29789/Kiriko-Endou). ~!He was responsible for developing the deadly viruses that are unleashed by Friend, while [Kiriko](https://anilist.co/character/29789/Kiriko-Endou) was tasked with developing their vaccines.!~ ~!Feeling guilty for his actions after being visited by [Kiriko](https://anilist.co/character/29789/Kiriko-Endou), he decided to kill [Fukubei](https://anilist.co/character/21461/Fukubei-Hattori).!~