Six civic groups slam the agreement as 'humiliating' and object to Seoul's promise

South Korean officials are to meet with former wartime sex slaves on Tuesday to seek their support for a landmark deal with Japan, after criticism it does not properly atone for the treatment of women forced into WWII army brothels.

Japan offered a "heartfelt apology" and a one-billion yen ($8.3 million) payment to the surviving Korean women forced into sexual slavery, under the agreement Seoul and Tokyo described "final and irreversible".