Major hotel chain operator Apa Group is facing fierce criticism after two students who stayed at one of its hotels in Tokyo posted a video about a book written by its CEO, which claims the 1937 Nanking Massacre committed by the Imperial Japanese Army was "fabricated by the Chinese side."

The book "Theoretical Modern History II — The Real History of Japan," was written by CEO Toshio Motoya under the pen name Seiji Fuji and was published by the firm last June.

The clip shows a female American student recounting her experience staying at an Apa hotel in Tokyo and being shocked after stumbling upon the book, which argues the incident "did not actually happen."