hEY !! SARAH!! i'm so sorry to have to ask you this question, but you're the ONLY Japan (and specifically Ishida) enthusiast I know .. and
i need to know
if you happen to know (in the most academic and easy to understand way i can phrase it)
To what extent did Mitsunari support or shape Toyotomi Hideyoshi's ambitions toward Korea and China?
'cause I can't really tell if he was just an executor, or an active advocate: a loyal functionary carrying out policy, or a deeply trusted insider helping shape and sustain that policy??? Ishida what were you doing.. will we ever know because of Tokugawa...
Hello! Sorry for taking so long to reply.
I wish I had the resources to deep-dive into this (and everything else Mitsunari-related) more thoroughly, but there is just so little available on him in English that it’s like pulling teeth for me to find much on him at all at this point. And even trying to find Kindle books on him I can use Kindle’s translator tool to read is proving to be challenging thanks to the abundance of AI slop currently infesting Amazon.
There is a great book in English on Hideyoshi’s Korean war—Samuel Hawley’s The Imjin War (see my loooong post about it here), but unfortunately it doesn’t go at all into whether Mitsunari supported or opposed Hideyoshi’s plans to conquer Korea and China, but it does highlight Mitsunari’s role in the peace negotiations which I think does help to shed some light on his true feelings about the whole endeavor.
In the summer of 1593 Hideyoshi sent a list of seven demands that were to be issued to the Ming through Konishi Yukinaga (one of the primary commanders of Hideyoshi’s forces in Korea, who would later fight for Mitsunari at Sekigahara and be beheaded alongside him on November 6, 1600), and three commissioners: Ohtani Yoshitsugu (who would die fighting for Mitsunari at Sekigahara), Mashita Nagamori, and Mitsunari himself. The seven demands were pretty ludicrous and wildly out of touch with reality. Hideyoshi expected the Ming Emperor to send one of his daughters to marry the Emperor of Japan, insisted on Korean princes/minsters being handed over to Japan as hostages, demanded that Korea be carved up and some of its provinces given to Japan, that trade between China and Japan be reestablished, among other things. As Hawley puts it, “It is clear that Hideyoshi’s understanding of the conflict, and more generally his view of the world, was too far removed from that of the Chinese and the Koreans for there to be any common ground between the two sides. And without common ground, there was no basis for peace.”
Mitsunari and his cohorts did what they could with what they were given and Yukinaga tried to assure the Ming envoys that the seven demands were merely meant to be a starting point for further negotiations. (But as Hawley says, “Just how much the taiko was willing to compromise, however, remains unknown.”) Hideyoshi’s English biographer Mary Elizabeth Berry has suggested that the demands were meant to be an attempt by Hideyoshi to “save face” in a war that was not going as smoothly as he had anticipated. The ensuing negotiations—over the course of which Yukinaga and the three commissioners gradually altered Hideyoshi’s unreasonable demands in ways the Ming would find more palatable—took over three years to conclude, and the Ming delegation didn’t end up actually going to meet with Hideyoshi in Osaka personally until October 1596. Their meeting with him ended up going disastrously (the Ming basically put on an elaborate ceremony to establish Hideyoshi as a vassal king, not their equal), and Hideyoshi eventually found out the extent to which his commissioners had taken liberties with their task, and Mitsunari and the others were removed from their positions, and Hideyoshi was barely talked out of ordering Yukinaga to commit seppuku. And of course Hideyoshi eventually retaliated for this perceived humiliation by ordering a second invasion of Korea, this time purely for the purpose of slaughtering as many Koreans (and their Ming allies) as possible.
So, I don’t currently know whether Mitsunari initially supported the idea of the Korean/Chinese conquest. I don’t, however, believe that he was high up enough on the totem pole, so to speak, to have shaped Hideyoshi’s views towards this invasion; from what little I can glean about him so far, Mitsunari seemed to be more concerned with the domestic affairs of Japan, and if I had to guess I’d say he probably wasn’t particularly in favor of his lord’s grandiose schemes of world conquest. The campaign was popular among the more militant types, men like Kato Kiyomasa and Fukushima Masanori, who lived for fighting and who viewed the administrator Mitsunari with a certain measure of contempt, and Kiyomasa at one point attempted to basically torpedo the peace negotiations when he discovered the extent to which Mitsunari and the others were deviating from the Taiko’s demands. Kiyomasa would’ve happily continued the war; he led his men over the Korean border into China and briefly battled the Jurchen. I think Mitsunari had a more realistic view of the impossibility of Hideyoshi’s end goal being accomplished and just wanted to bring it all to an end while helping his lord “save face” as much as possible.
Thanks for the ask! I wish I had more details on Mitsunari, but I'm still working towards that. Hopefully one day I'll be able to write about him with more confidence and more sources at my disposal.