I honestly have no frame of reference for how the Japanese have accepted the sins of their fathers. The Japanese did name their "helicopter destroyer" the Kaga, the same name as one of the IJN carriers that attacked Pearl Harbor.All true. They actually bend over backwards. My own SIL is a prime example, however, he did lose family members to the Nazis...
Kaga is the name of a province in Japan, but I'm not sure what to make of that.