Lots of Japanese have been abducted by North Korea to train their spies, build cover stories to live as Japanese (i.e. https://en.wikipedia.org/wiki/Sleeper_agent) across generations etc. Since NK is a proxy for China, one can expect a flow through. See - https://en.wikipedia.org/wiki/North_Korean_abductions_of_Jap...
In popular Movie/TV parlance (eg. Russian spies in the USA) these Sleeper Agents are called "The Illegals".
Lots of Japanese have been abducted by North Korea to train their spies, build cover stories to live as Japanese (i.e. https://en.wikipedia.org/wiki/Sleeper_agent) across generations etc. Since NK is a proxy for China, one can expect a flow through. See - https://en.wikipedia.org/wiki/North_Korean_abductions_of_Jap...
In popular Movie/TV parlance (eg. Russian spies in the USA) these Sleeper Agents are called "The Illegals".