Many Japanese war criminals may have escaped justice, but many paid the price for them.
War is indeed HELL.
日本*ピング* (kono risuto ni hairitai ka detai wo shirasete kudasai : let me know if you want on or off this list)
Leaving aside China [a whole thread in itself], the Japanese Imperial Guards Division assigned to Yamashita in Malaya, beheaded Australian prisoners at the Straits of Jahore. Then there was the Bataan Death March, the murder of other prisoners, the execution of folks captured at Wake Island [in 1943?], and the murders of various U.S and Allied military prisoners throughout the Pacific. And, of course, the experiments conducted by Unit 731 on Chinese, Russian and Korean civilians, as well as on Allied prisoners, in Manchuria.
And any country that has an almost 40% mortality rate among its POWs [the rate for westerners in German hands was 3-4%], deserves no pity.
The problem is not who paid what price in Japan. The problem is the almost absolute refusal of Japanese society, and government, to see themselves as anything but victims in WW II, and to acknowledge what they did.