I would guess that most projects of AAA scale, JRPG, WRPG, RPG, whatever probably have
some vile people attached to them.
The only real difference is that DQ's vile person is a person of artistic note instead of
just some faceless CEO working in the background, some coding team leader or what have you.
If you buy it, buy it to support the rest of the team, and consider modding it to use any orchestral tracks you own to rebel against his wishes.
And if it
still eats at your conscience, just donate something to a charity like one for awareness of the Nanjing Massacre. I don't know if they're still collecting footage, but the
USC Shoah Foundation was recently collecting interviews and research
to preserve the memory of the atrocity. They also collected testimonies from the Armenian Genocide survivors, Tutsi Genocide survivors and Holocaust survivors in their
IWitness platform.
Seems as good an option as any.