Original sentence: Disguising his Korean ethnicity, Sin-rak claimed that his name was Mitsuhiro Momota (Momota being the surname of the family which adopted, but later disowned, him) and listed his birthplace as Omura, Nagasaki
Edited sentence: Due to the discrimination against Koreans by the Japanese, Sin-rak claimed that his name was Mitsuhiro Momota (Momota being the surname of the family which adopted, but later disowned, him) and listed his birthplace as Omura, Nagasaki