The Liancourt Rocks are disputed between Japan and the Republic of Korea, because aren’t they always.
Red, white, and blue are the colours of the South Korean flag, and the former two also of Japan’s. Additionally, the rocks are named after a French whaling ship, so that fits as well. The white shape separating the two stripes is a silhouette of the two main islets, which I think looks rather neat. I honestly have no idea what the circles in the blue stripe are for, though. It may very well be that I simply added that element because the flag looked too empty otherwise.
I’m not sure about this one on the whole. While there is something aesthetically pleasing about the design, it doesn’t really work as a flag. But hey, I’m trying to do realistic vexillology here. Sometimes flags just look mediocre.