"Tales of Zestiria the X" is an anime adaptation of the "Tales of Zestiria" video game, blending fantasy, adventure, and action. The story is set in the world of Glenwood, where humans and Seraphim, spiritual beings invisible to most humans, coexist. The narrative centers on Sorey, a young man raised by Seraphim in the secluded village of Elysia. Sorey possesses the rare ability to see and interact with Seraphim, a trait tied to his destiny as the Shepherd, a legendary figure destined to purify the world of malevolence, a corrupting force that spawns monsters known as Hellions.

Sorey’s journey begins when he and his childhood friend, Mikleo, venture beyond Elysia and encounter Alisha, a princess knight from the kingdom of Hyland. Alisha seeks the Shepherd’s aid to combat the growing malevolence plaguing her land. Sorey accepts the role of Shepherd, wielding the sacred sword Excalibur and forming pacts with Seraphim to gain their powers. Alongside Alisha, Mikleo, and other Seraphim companions like Lailah, Edna, and Dezel, Sorey embarks on a quest to restore balance to Glenwood.

The plot explores themes of coexistence between humans and Seraphim, the consequences of human ambition, and the struggle against corruption. Sorey’s idealism and determination to save both humans and Seraphim are tested as he confronts the complexities of the world, including political strife between Hyland and the neighboring nation of Rolance. The malevolence, fueled by negative emotions, becomes a central antagonist, manifesting in both physical and ideological forms.

Key characters include Sorey, the compassionate and determined Shepherd; Mikleo, his analytical and loyal Seraphim companion; Alisha, the earnest and duty-bound princess knight; and Lailah, the wise and nurturing Prime Lord who guides Sorey. The series also introduces Zaveid, a rogue Seraphim with a mysterious past, and Rose, a skilled assassin who becomes a pivotal ally. The interplay between these characters drives the narrative, with their relationships and personal growth shaping the story’s progression.

The anime expands on the game’s lore, incorporating original elements and deeper exploration of the world’s mythology. It balances episodic adventures with an overarching plot, culminating in Sorey’s confrontation with Heldalf, the Lord of Calamity, whose tragic past and descent into malevolence serve as a foil to Sorey’s journey. The series concludes with Sorey’s ultimate sacrifice to purify the world, leaving a lasting impact on Glenwood and its inhabitants.