It is a war chronicle in 40 volumes that describes the period of the Northern and Southern Courts (Japan) from 1318 through 1368 (for about 50 years), starting from Emperor Godaigo's ascension to the throne and continuing through the fall of the Kamakura shogunate, the Kemmu Restoration and the split into northern and southern courts that followed its collapse; the Kanno disturbance, and the death of the second shogun, Yoshiakira ASHIKAGA, and ending with the assumption of the office of kanrei (deputy shogun) by Yoriyuki HOSOKAWA.
全40巻で、南北朝時代(日本)を舞台に、後醍醐天皇の即位から、鎌倉幕府の滅亡、建武の新政とその崩壊後の南北朝分裂、観応の擾乱、2代将軍足利義詮の死去と細川頼之の管領就任まで（1318年（文保2年）-1368年（貞治6年）頃までの約50年間）を書く軍記物語。