Shikamaru Hiden: A Cloud Drifting in Silent Darkness

is an original story written by Takashi Yano and illustrated by Masashi Kishimoto. It is the second book of the Naruto Hiden series.

Synopsis
Everywhere post-war, there is been an outbreak of multiple incidents of shinobi who have disappeared. Even in Konohagakure, Sai has vanished. The shinobi who disappeared went towards an enigmatic and developing nation called the. Shikamaru Nara accepts the mission to assassinate the head of the "Country of Silence" where he will face his greatest battle there.