Jiro Wang is the eldest son of Kunzhi, the younger brother of King Zhou Wen. Kunzhi has lived in Japan for many years. In 477 AD, it was said that the longevity king of Koguryo attacked Hanshan City, the capital of Baekje in 475, killed Baekje beggar Lu Wang and annexed the Hanjiang River basin. Comfort City, the capital of Baekje, was captured by Koguryo. King Geru escaped and was killed in Acheng (now Kangzhuang Cave, Chengdong District, Seoul Special City). Kun Zhi died in 477 AD. Similar to the assassination of revenge in September 477. Two years later, the king of Sanjin died childless, and the powerful minister Xie and Zhen Shi returned to Baekje from Japan.

Since then, Baekje's kingship has been excluded, and it was not until King Wuning ascended the throne that the kingship was restored.