Within the medieval realm of Pars, Prince Arslan grapples with his father's animosity and his mother's indifference, longing to explore beyond his confines. Despite the kingdom's hardships, Arslan envisions a brighter future. However, everything shifts when the neighboring Lusitania launches an invasion, thrusting Arslan into sudden maturity. Arslan Senki chronicles the prince's journey through warfare as he endeavors to protect his country and kin, aided by a loyal circle of advisors. Amidst hidden truths and formidable foes, Arslan discovers both hostility and unexpected allies. Beyond a tale of warring nations, Arslan Senki delves into a young boy's struggle to hold onto his identity amidst adversity.