Yokoyama Mitsuteru Sangokushi (Series)

Around 1800 years ago in China, the ruling power of the Han dynasty became weakened and the flames of war spread throughout the land. Liu Bei was a young, poor straw-mat seller from the countryside of Hebai Hsing. After pledging eternal brotherhood with the two heroes, Guan Yu and Zhang Fei, Liu began building his idea of a righteous kingdom that would aid citizens who suffered from persecution. (Source: AniDB)