Well as I said I've only watched the first season so I'm probably gonna say something stupid, but ok.
I really appreciated how Ton was written: he's a tyrannical, vulgar and sexist slave-driver. He's definitely a piece of shit but not inherently evil: he's the byproduct of Japan's corporate culture. When he was young like Retsuko he was bullied by his superiors and seniors, watched them act like tyrannical, vulgar and sexist slave-drivers and when it finally came the time for him to be in charge, the world around him changed a little: sexism and mobbing aren't tolerated anymore (or rather, they're not THAT tolerated anymore) and he got an admonishment for something that would have been laughed at back in his days. He's the typical bitter boomer that doesn't like that the world has stopped revolving around him, despite all the privileges he's got. Even without Ton, not much would change for Retsuko, her boss would still be a different kind of asshole because that's what capitalism produces: slaves and slave-drivers.