NARUTO: Sasuke Retsuden - Uchiha no Matsuei to Tenkyuu no Hoshikuzu

Overview

Sasuke and Sakura take on ancient secrets, deadly conspiracies, and even dragons in this manga adaptation of the novel. Years after the great shinobi war, Naruto is struck with a mysterious illness. Desperate for a cure, Sasuke Uchiha heads for the isolationist land of Redaku, where he’ll need to infiltrate an astronomical observatory that’s being operated as a prison for deadly criminals. There he rendezvouses with none other than his wife, Sakura, and together they dive into an undercover investigation in search of traces of the Sage of Six Paths! With danger lurking around every corner, what fate will lie in store for the ninja couple? (Source: VIZ Media, edited)

Source: AniList