If it's from ASB, I think there was a TL where several portals opened to parallel worlds, one of them in the Korean peninsula. Koreans and Japanese worked together there.
Haven't seen one for post-1900 I don't think, sorry.
If it's from ASB, I think there was a TL where several portals opened to parallel worlds, one of them in the Korean peninsula. Koreans and Japanese worked together there.
Haven't seen one for post-1900 I don't think, sorry.