Ryoka Oshima (大島 涼花, Oshima Ryoka, born 21 October 1998 in Kanagawa Prefecture) is Japanese actress and former singer. She is a former member of the Japanese idol girl group AKB48. She was a member of AKB48's Team B.
After the events of Adventure Camp, 14 new contestants has to live a few weeks in summer camp to win a million dollars (similar to the the original total drama show). Whoever stays the longest wins.
