Gravure idol Reimi Tachibana (23) suddenly announced on Saturday that she is retiring from the entertainment industry.She wrote honestly on her blog that she was unhappy with herself and with the world of show business. She apparently had worries about her career, and there may have been problems between her and her management.http://www.tokyograph.com/news/idol-reimi-tachibana-fed-up-with-show-business/