Activists fighting for women coerced into work at Japanese wartime military brothels urged Tokyo on Wednesday to scrap the deal it struck with Seoul last month.

They say its terms belittle the women who endured such indignity and dodge Tokyo's legal responsibility to admit the full extent of what happened.

Around 20 supporters of the wartime sex slaves euphemistically known as "comfort women" yelled slogans outside the Foreign Ministry building on Wednesday denouncing the agreement hailed worldwide as a breakthrough in strained bilateral ties.