Japan cannot invade Dokdo

There are three major reasons.
1. Under the ROK-US Mutual Defense Treaty, if Japan invades Dokdo, the United States must join South Korea to repel the Japanese Navy. Do you think the U.S. would just stand by in such a situation? They would immediately tell them to "get out" and force the Japanese Navy to withdraw. If they don't withdraw? Japan will pay the price for not listening to the U.S.
2. China would say "thank you." And they would immediately take the opportunity to seize all the Japanese islands along their own coast. Since Japan crossed the line first, China would have the justification to cross the line as well.
3. Do you think the South Korean Navy will just sit idly by? The Japanese Navy might seem superior, but their operational area is several times larger. In other words, the naval power they can mobilize specifically for the waters around Dokdo is limited. If the South Korean Navy and Air Force commit their full strength to attack the Japanese Navy invading Dokdo, Japan cannot guarantee victory.
Japan is not foolish enough not to know this.
However, what if the ROK-US Mutual Defense Treaty is invalidated and the U.S. military withdraws?
In that scenario, it won't just be Japan that becomes a problem.
North Korea would immediately attempt to occupy the five West Sea islands,
China would send warships to Ieodo and try to turn the waters as far as Jeju Island into their own,
and Russia would also charge in to turn the Ulleungdo area into their own airspace.
Japan? Naturally, in that situation, they would try to turn the Dokdo area into their own sea.
Perhaps Japan and Russia might even join hands and suggest to South Korea that the Ulleungdo and Dokdo areas be managed as a joint maritime zone.
You say international law says otherwise? What power does that kind of international law have in the face of raw strength? Haha.
Therefore, to prevent a Japanese invasion of Dokdo,
we must prevent the nonsense of self-proclaimed pacifists who say, "Since we haven't tried it, let's try withdrawing the U.S. military first..."
and self-proclaimed nationalists who shout, "The U.S. military is an occupying force."
We must ensure the delusions of such people do not spread beyond a certain point.
Oh, and of course, those people will likely see this post and start spamming insults like "Japan-worshipper" or "indigenous Japanese sympathizer."