20 million civilians slaughtered
sex slaves
civilians buried, burned alive
continous provocation from japs
japanese president visiting the shrine honouring the war criminals of WWII
always hiding the truth and denying the truth
no money paid for the damage done (how much would you pay anyways for 20Million lives?)
...and more

and personal reasons
like mine: my grandfather stared at a jap, and he was hit on his back with the butt of the rifle the jap was holding.

japs are lucky being a puppet of USA. if it wasn't for them, there wouldn't be a japan. think: japs are surrounded by countries they invaded in WWII. korea, china, phillipines to name a few.