Is Japanese Katakana Derived from Korean Kwukyel?

[soryang]

3. There was a Baekje prince who moved to Yamaguchi prefecture 597 ad

from Korea. Prince Im Sung. He had to leave the Baekje kingdom or risk being killed in a series of frequent dynastic succession struggles. He took a particular sect of Buddhism with him, metallurgists, along with a variety of Korean wares, artwork, architecture, etc.. Archeologists found this his cultural footprint extended all over the prefecture in a short time because he was a very successful merchant trader with Korea. I should have taken notes or saved the link. His Japanese descendants maintained an ancestry record which went all the way back to his arrival in Japan. There is even a myth in the region where he landed about an astrological event which heralded the Prince's arrival.

While there has been a history of piracy, the Japanese Imjin invasion didn't take place until 1592. (King Sejong's hangul alphabet was completed by 1446. I've had some people say to me they think hangul came from Japanese script which is an unsupportable contention). Massive looting and pillaging took place in the 1590s, and then again in the latter 19th Century up through 1945 but those events were much later.