The older brother, Emperor Gofukakusa's line was called the Jimyoin Imperial line, and the younger brother, Emperor Kameyama's line was called the Daikakuji Imperial line, this example of sharing the throne was the biggest event in Japanese history that had a great impact on the later period.
兄・後深草の系統を持明院統、弟・亀山の系統を大覚寺統というが、これが日本史上最大の皇位迭立となり、後世に大きな影響を与えることとなる。