“...”Japan’s actions are understandable, ....”
58,195 names on a wall in DC might disagree with Japan... if they were able to speak up.
The two nations are moving forward to counter the PRC. Fighting China is one of the few things that unifies the Vietnamese.
Between WWI and WWII, we lost 400K men mostly fighting the Germans, who also slaughtered over 10m non-combatants. We got over that. We also lost 100K men to the Japanese during WWII, which featured events like the Bataan Death March, and the vivisection of captured American bomber crews in Japan. We can get over a war during which we burned the country down and killed over a million of their young men in combat.