This Ostranauts Mod adds 417 Japanese first names and 203 Japanese surnames to the game.
To install, add the JapaneseName folder to your Ostranauts Mod folder and add JapaneseName to loading_order.json accordingly.
A large number of the first and surnames were sourced from https://behindthename.com and https://surname.behindthename.com with permission for use given by owner Mike Campbell.