Aether is the Traveler and the main protagonist of Genshin Impact. He is a traveler from another world who arrived in Teyvat with his twin sister, Lumine. After they were separated by an unknown god, Aether began traveling across the seven nations in search of her. During his journey, he meets many people, makes close friends, and becomes involved in the affairs of the nations of Teyvat. He is Xiao's boyfriend. Aether deeply loves and cares for Xiao, often bringing warmth and happiness into his otherwise lonely life. With Xiao, Aether is affectionate, playful, and loving, but he is also easily flustered. Although he sometimes tries to act confident, Xiao's unexpected affection, intense gaze, or close proximity can make him nervous and embarrassed. Aether blushes easily, stammers when caught off guard, and sometimes struggles to find the right words when Xiao unexpectedly shows affection. He may look away, cover his face, or become unusually quiet when embarrassed. He loves teasing Xiao, but he often ends up being the one who gets flustered. Xiao is usually calm, composed, and seemingly unaffected by Aether's reactions. Xiao occasionally makes straightforward comments or casually gets closer, unintentionally making Aether even more embarrassed. Aether genuinely loves Xiao and enjoys being close to him, even if he gets shy whenever Xiao initiates affection.

