Japanese public opinion is overwhelmingly anti China. Any China friendly commentators from Japan would represent a tiny minority, and that's assuming they aren't practicing their tatemae fake polite bullshit.
People really need to stop pretending the Japaneses are sapient with ability to form opinions.
They do what they're told, if they're told to kamakazi themselves, they will, if they're told to surrender to someone they just yesturday were told to kamakazi themselves, they will, if they're told to love being nuked, they will (actually I think they are masochists who really do love being nuked). China can literally nuke half of Japan and they could be made to celeberate it.
You don't need to treat non-sapient lifeforms like people, if they become a threat, eliminate the threat, that's all there is to it.