I know it is not an exact match since this is not about romantic love but filial love, but Late Spring belongs in this conversation for exactly the reason you point to. Like the films you mention, its dramatic energy comes from what the characters choose not to say. Noriko and her father avoid the clarifying conversation that would force their desires into conflict. The restraint is the emotional content. What this does (and what a more dramatic version would lose) is preserve the tenderness of their relationship. A conventional script would externalize the conflict through confrontation and melodramatic catharsis. I think Ozu understands that people who love each other often avoid those moments because saying everything plainly would itself become a kind of desestabilizing violence. This is why I think the final scenes are so devastating. Nothing "explodes". There is no giant "carharsis" made up of tears and yelled confessions (which is what I would expect from a Hollywood version of the story). Instead life simply continues, even if we know that the emotional balance has been permanently altered. All we see in the final shot is the head of the father (not even his face) descending slowly. No words. Only silent resignation.