Hangai 【半谷】5 The Japanese surnames etymology dictionary.
Oosaka-fu , Kyouto-fu , Toukyou-to . Korean type . Originated in Changwon City, Gyeongsangnam Province, Korea. There is a record of naturalization on Osaka-fu Katano-shi on March 4, 1993. The real name is yellow. 黄 reference. There is also a real name in the last name. 丁 reference.