I regret that Appletrees edited it based on such history knowledge. 
Ueda Masaaki introduces the difference point and the common feature of the myth 
of Korea and the myth of Japan. 

"The Bidatsu emperor is South Korean" is one of the ear dusters that the [[South 
Korean]] tried to make popular.  "大原真人 出自謚敏達孫百済王也" is translated into "Ohara no mahito takayasu is Bidatu emperor's king grandchild's Kudara descendant.". However, South Koreans misinterpreted it. "The grandchild of Bidatu is a royal family of Baekje. Therefore, Bidatu is South Korean." 百済王 is a name of a person. The Baekje coming from is written 出自百済國. For instance, father of Takano Nigasa is written like this. "和史乙継 出自百済國都慕王十八世孫武寧王也"