Seirei Gensouki: Spirit Chronicles (2021)

S1E10 A Spirit's Awakening

Title: A Spirit's Awakening Plot: Rio arrives back at the village of the People of the Spirits, only to awaken the following morning to find a mysterious and stunning girl lying beside him, completely unclothed. As Latifa and the others peer into the room, mayhem breaks out, but it soon becomes clear that the girl is actually Rio's bond spirit. Lacking a name, Rio decides to call her Aishia. Shortly thereafter, Dryas, a spirit of ancient trees, appears, intrigued by the presence of such a powerful spirit. Encouraged by Dryas, Rio and Aishia agree to engage in a battle to test her fighting skills.