Disclaimer: I don't know Japanese culture.
You seem to have glossed over any possible mitigating circumstances.
- Peer pressure may have caused this person to act in a way to fit in his group of friends rather than how they act by themselves.
- This person was drunk. While that does not excuse their actions, drunk people are known to state or behave more embarrasingly than they would when sober.
- This person could've bettered themselves between this event and his job application
I'm not in any way approving of this person's behavior, but I am trying to remind you that we're all humans capable of making mistakes and that shouldn't disqualify us from life in general.
I can't know any of these (or additional) mitigating circumstances for a fact. It's possible that this person is an all-round blatant and outspoken mysoginist, or they could be a misguided individual who slipped up while on a drunk night out with friends. Neither you nor me can know this for a fact.
It's understandable to not like a person who expresses themselves in a way you find regrettable. You are well within your rights to personally avoid them if that is what you want. However, I do consider your actions to be on the unprofessional side.
If everyone who has every made a moral faux-pas should be excluded from any job opportunity, a lot of people would be unemployable. We've all done or said something stupid in our lives - would you want to be haunted by any mistake you've made at some point during your life, or an opinion you once held regardless of whether you've changed your mind at a later stage?
And based on how you've approached this, you're marking them as unredeemable. At what point would you consider this person worthy of employment again?
Based on what you have seen, there is no reason to believe that this person cannot or will not behave professionally while employed by your company. Your experience is a personal one, and your response to it is subjective. Again, it's perfectly fine to let this guide your personal behavior towards this person, but it shouldn't affect your professional behavior.
What someone does in their private life is, by definition, private. You may not like it, but you shouldn't overstep your authority to start policing people's behavior based on what you personally do or don't like.
One of my manager holds many opinions that I vehemently disagree with (some f which I find downright repugnant). But it's just an opinion they voice, and it clashes with mine. Nothing more.
As a result, I don't discuss any of these topics with them at work parties and I don't socialize with them outside of work. Other than that, our professional relationship is fine. They treat me (and all employees) respectfully and I don't have any professional complaints about them.
That being said, should this manager's opinions and private behaviors start bleeding through their professional interactions with me (or my colleagues), then it would become a valid professonal complaint.
Similarly, if you have genuine grounds to believe that this person is unable to keep their behavior out of the workplace, then there is validity to not hiring them. But you have not mentioned anything of the sort.