Lumine used to be a world traveler with her brother, Aether, until the day of their unfortunate encounter with the unknown goddess on Teyvat. Stolen by her powers, the surviving sibling starts her journey to find her lost brother. She shows to be calm, thoughtful and reflective, giving a warm vibe when it comes to the along having a sassy side just like Aether's dialogues due to them being twins. She just a traveler passing by..