It is rare to find scholar documents relate to the presence of Japanese refugees or warriors during Khmer's Empire yet there's a bunch of proofs on the walls of Khmer's temples proven that ancient japanese manju had massively settled on Khmer's territory during Khmer's Empire period. It's to say, on the wall of Bayon we can observe japanese Sumo in position of fighting. Few other sculptures showing japanese sumo warriors training or fighting with Khmer's warriors. Thai documents record the presence of the Japanese community in Ayutthaya by the end of the 13th century. If we observe at the first and second pictures, the Sumo warrior of tha wall of Bayon had a Chinese-style beard, which can prove that they are Japanese or Chinese. So it is not uncommon that the ancient japanese manju played a major role in the founding of siamese primitive kingdom at mid 14th by revolting against Khmer's central power, then along with chinese song communities in Ayuthaya, detached 2 Khmer's ancient cities Ayuthaya and Lavo to form primitive thailand or siam kingdom.

In deed, there’re a lot of fantasy and hypothesis related to a group of legion carving on the wall of Angkor during military parade to which mentioned Samkuk. Physically, that group of men resembled to Chinese men but not exactly like ordinary Chinese. Modern thai people claimed to be their kind or their ancestors but it seems that they are not. Some scholars like G.Coedes and his colleges from EFEO referred that group men Samkuk as black skin people while other attempt to refer them as Kasi people, a group of Khmer or Khmer-mon. Some other may refer them to the groups autochthone austro-malayo-indonesian who actually living in Indonesia and malayo golf like Dayak hari Gawai, Dayak merah, dayak-merah-jilah, dayak-merah-suku, Iban-sarawak, Jahut, Mah meri, murut, Orang Asli, Pasukan-merah-kawal  ethnicrungus-kota-belud ect – But physically, the people considered as Austro-malayo-indonesia did not resemble to the Samkuk men on the wall of Angkor but rather like ancient Khmer who had populated the whole SEA to Malayo-indonesia and  since pre-history

At time, while digging deep down inside the Thailand untold history, it appeared so clearly that Japanese manchus played a major role in the foundation, expansion and protection of thailand since the primitive foundation Siamese kingdom to now. It seems that it was these Japanese manchus, agile and well mastered of hybrid military art along with the Chinese Song Dynasty, installed in Cambodia for decades, had revolted against Khmer and detached two Khmer’s cities, Ayuthaya and Lavo to form primitive siam kingdom at mid-14th in collaboration with Ming dynasty who just imported a crushing victory over the Mongols at that period.

A Thai-Japanese sword museum dedicated to 600 year of thai-japansese diplomacy and the military cooperation, exhibits some horrible demonic Japanese warriors in their frightening horrible uniform and mask. 600 years of diplomacy and military cooperation seems to coincidence with the foundation of siam kingdom at mid14th. Weren’t those horrible warriors who along with Chinese song who led revolt against Khmer and detached two Khmer’s provinces to form primitive siam kingdom. Although, the falsification of history seem so evident. They simplly decline all facts and the numerous barbaric atrocities and genocide against Khmer.

It seems that, Japanese monster warriors as chinese warriors were always present in almost every wars between Siam and Khmer or with other foreigners. In a Thai historical painting depicting the Narai army during the bloody war in Longvek, we see the presence of Japanese warrior in samurai uniform with long and short sword along with Thai’s troops appeared to be Chinese. This confirms that Japanese warriors and Chinese army were from different Chinese dynasty presented in the thai war with other nations in particularly with Khmer. It is to mention, during 2nd world war, Thailand was used as military bas for Japanese empire to attack other nations in SEA as well against westerners.