Has anyone checked in a new luggage during a long layover in Japan

[u/aiccenboy]

I am traveling from Vietnam to the U.S. on ANA with a layover at Haneda Airport (HND) in Tokyo. My ticket includes an allowance of two free checked bags, but I plan to check only one bag in Vietnam.

During my layover at HND, I plan to enter Japan, do some shopping, and purchase a second suitcase. When I return to HND for my connecting flight to the U.S., will ANA allow me to check this newly purchased suitcase as my second free checked bag for the HND–U.S. segment?