Garo: Under the Moonbow (2019)

After the events of Lament of the Dark Dragon, Kouga and Kaoru married and started a family. Kaoru gave birth to the successor of Garo: Raiga Saejima. Unknown to everyone, Raiga's birth also marked the return of Barago. Although he was devoured by Messiah, a remnant of Barago survived and lingered in the darkness for some time. However, the birth cries of Raiga awakened him and he wanted revenge upon the Saejima family. Too weak to be a threat, Barago traveled corpse to corpse, wandering between the darkness and dead to find Raiga. In between his quest for revenge, Barago somehow acquired Shiroku to be his herald and dispatched him to do his bidding until it was time for his return.