About 200 protesters marched through the streets of Tokyo's Shinjuku district on Sunday carrying banners to protest a hotel chain under fire for books its president wrote denying that the Nanking Massacre in wartime China ever happened.

Tokyo-based hotel and real estate developer Apa Group is at the center of a furor over books by its founder and president, Toshio Motoya, espousing his revisionist views on history and sitting in every room of the company's 400-plus hotels.

Motoya, using the pen name Seiji Fuji, wrote of the Nanking Massacre that "these acts were all said to be committed by the Japanese (Imperial) Army, but this is not true." He also denied stories of the Korean women forced to work as prostitutes in its wartime military brothels, the so-called "comfort women."