Afumi no Umi: Minamo ga Yureru Toki

Overview

Head of the clan at just two years old… The year is 1550. A pivotal moment in history when the Ashikaga shogunate is driven out by the Miyoshi clan, signaling the collapse of the Muromachi shogunate. From the small domain of Kutsuki in the province of Oumi, young Kutsuki Mototsuna (childhood name Takewakamaru) begins his defiance. A forgotten master strategist, who rewrote the history of Japan. This epic drama boldly portrays the life of Kutsuki Mototsuna, the only Sengoku warlord who aided the three great unifiers Nobunaga, Hideyoshi, and Ieyasu. Here begins the manga-fied tale of survival in the turbulent Sengoku era! (Source: Manga Mirai)

Source: AniList