S.Korea's surviving "comfort women" spend final years seeking atonement from Japan

* Victims of Japan's wartime brothels seek "sincere" apology, compensation

* Only 27 registered South Korean survivors alive today

* Japan says claims were resolved by past treaties, apologies

* Historical disputes bleeding into S. Korea-Japan relations

By Josh Smith and Haejin Choi

DAEGU, South Korea, Nov 23 (Reuters) - When 17-year-old Lee Yong-soo returned home to South Korea in 1945 after years as a child sex slave for Japanese troops, her family, having given her up for dead, thought she was a ghost.

"When I returned, I had a deep wound," Lee told Reuters, holding a black and white photo of herself in a traditional Korean dress, taken in her first year back home.

She still remembers the blue and purple fabric of that dress, but other memories from those years are more traumatic.

"I thought I was going to die," Lee said of the abuse and torture she endured at a brothel at an airfield in Taiwan used by Japanese kamikaze pilots in the final years of World War II.

Now 90 years old, Lee says she feels like a sincere apology from Japanese authorities for the wartime exploitation of so-called “comfort women” is no nearer now than when she returned home more than 70 years ago.

Japan says the claims have been settled by past agreements and apologies, and that the continued controversy threatens relations between the two countries.

Some historians estimate up to 200,000 Korean women were forced into sex slavery during Japan's occupation from 1910 to 1945.

Now with only 27 registered South Korean survivors still alive, there is a sense of urgency behind efforts by the women to receive a formal apology as well as legal compensation from Japan while their voices can still be heard.

Just days before Reuters interviewed Lee at her one-room apartment in the southern city of Daegu, a fellow victim had died, one of six so far in 2018.

Another survivor, Kim Bok-dong, said she wanted to share her story, but suffering from cancer and expected to live only a few more months, she was unable to find time to speak.

"SINCERE APOLOGY"

Under the 1965 treaty, Japan reached a deal with South Korea to provide an $800 million aid and loan package in exchange for Seoul considering all wartime compensation issues settled.

A South Korean panel late last year concluded a separate 2015 deal between South Korea and Japan failed to meet the needs of former "comfort women".

Acting on that conclusion, the South Korean government this week shut down a fund created under the 2015 deal and vowed to pursue a more "victim-oriented" approach, a move Japan said threatened the two countries' relations.