No they do not. They know which way the wind blows and reacted to it. It's difficult to assess these people when you don't know their history. Germany is not Japan.
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You're the one who is ignorant and confused about the history in the far east after seeing your comments about Japanese ww2 atrocities/human experimentation/bacteriological warfare, comfort women, imperial system of vassalage...
You are only correct in your assessment about the 'embarrassment over ww2' when it comes to the Japanese ultras. They are not embarrassed precisely because there was nothing to be embarrassed about. If anything the ultras feel that Japan was hard done by the western powers during/over WW2. History textbooks in Japan are doctored to ensure that the embarrassing bits are omitted or minimized or blended with various euphemisms like 'comfort women' when 'sex slaves' would've been more appropriate.
So to get back to the point about comfort women in your OP and post #4, no they did not willingly go to the Japanese to work as prostitutes, I don't know how you manage read the whole wiki article and concluded the whole 'comfort women' saga was just a 'supposed' war crime. They were Asian sex slaves and there were also white sex slaves roped in.
And no Japan did not willingly apologise or offer fair compensation over ww2 voluntarily and promptly like the Germans. They had to get their arms twisted hard and be embarrassed repeatedly for decades before they started with weak and halting apologetic statements.