Nobunaga o Koroshita Otoko: Honnoji no Hen 431-nenme no Shinjitsu (信長を殺した男～本能寺の変 431年目の真実～) is a Japanese manga series written and illustrated by Yutaka Tōdō.

It was serialized in Akita Shoten's seinen manga magazine Bessatsu Young Champion from August 2016 to July 2020.

The series is an adaptation of The Honnoji Incident: The Truth 431 Years Later by Kenzaburō Akechi.

Written and illustrated by Yutaka Tōdō, Nobunaga o Koroshita Otoko: Honnouji no Hen 431-nenme no Shinjitsu was serialized in Akita Shoten's seinen manga magazine Bessatsu Young Champion from August 2, 2016 to July 7, 2020.

[3][4] A sequel manga, titled Nobunaga o Koroshita Otoko: Nichirin no Demarcation, began serialization in the same magazine on February 2, 2021.