Taiwan and Japan Sign Agreement to Manage Immigration Issues During Crisis
From The Yomiuri Shimbun:
The memorandum will allow Japan to receive information on non-Japanese people who seek entry to Japan from Taiwan, according to the sources. This will help Japan more effectively screen individuals and determine who may pose a threat to domestic security in the wake of a contingency. Under the memorandum, travelers bound for Japan will also receive a pre-departure check at Taiwan airports outside of contingencies.
“Chinese agents could enter Japan by concealing themselves among Taiwanese nationals,” a Japanese source warned.
The article notes how unusual this kind of agreement is and it is kinda chilling that there is public-level planning for this situation. But best to be prepared rather than improvise in the chaos.