長谷川幸一
A side character in [[Golden Kamuy]]. A Japanese photographer working in Vladivostok with his wife [[Hasegawa Fina|Fina]] and infant daughter [[Hasegawa Olga|Olga]].

[spoilers]Later revealed to be [[Tsurumi Tokushirou]] in disguise, who was sent to Russia to act as a spy for the Imperial Japanese Army.[/spoiler]
hasegawa kouichi