Dude, look in the mirror, you need to live with that person and you’re excusing the crimes of Unit 731.
Not a dude, stop assuming everyone on the internet is.
The pacific theater were two extremely violent empires duking it out.
A) Do you think the US hasn’t done worse than the rape of Nanking and Unit 731?
B) The US policy of containing Japan and economically provoking them does not mean that Japan was justified, it is simply the lead up to war between two incredibly violent factions competing over the same resources.