Koutetsu Sangokushi

Rikuson, a descendant of the family entrusted with the Imperial Seal, joins forces with Sonsaku to understand the seal's intentions. However, their plan is complicated by Sonsaku's assassination and the subsequent loss of the seal. Rikuson then embarks on a mission to retrieve the seal, navigating the tumultuous landscape of civil war and great power struggles in ancient China, inspired by the classic novel Romance of the Three Kingdoms.