Why also was he kept alive/in power after the Allied occupation and not executed like a lot of the military hierarchy which killed, raped, tortured etc. in his name?
This topic has come up a couple of times before, generally in a slightly broader context. While you're waiting for fresh answers, you might like to check out some of these earlier threads, especially
When the U.S. forced Emperor Hirohito to renounce his divinity following WWII, did this renunciation have any immediate affect on the Japanese psyche and does the notion of Japanese and specifically Imperial divinity persist to any degree today?, with u/redwhiskeredbubul
In the 2012 movie Emperor, Hirohito is seen by the Japanese people as a living god. Is this accurate?, with u/shakespeare-gurl