'New National History') is an unfinished Japanese official historical work compiled, in part, by the early Heian period scholar Ōe no Asatsuna [ja], grandson of Ōe no Otondo, who had been one of the compilers of the Nihon Montoku Tennō Jitsuroku.
[1] After Asatsuna's death in 957, his cousin Ōe no Koretoki became the head compiler.
However a later work, the Shūgaisho [ja], states that the Shinkokushi was fifty volumes and included the reign of Emperor Suzaku (930-946) as well as Uda and Daigo.
[1] Because of the differences in size, lack of a formal title, and that no record of a presentation of the work survives, it is believed that the Shinkokushi was an unfinished manuscript.
[1][3] As a manuscript, the entirety of the Shinkokushi does not survive but instead portions of it have been passed down in other works.