So I have my theories. Since aether has higher hp then lumine while lumine has higher charge attack then aether, my assumption is during their travels and past battles aether was tanking
Genshin Impact's New Anime Could Settle the Main Character Debate
issa on X: "this curiosity vs. confusion is a lot more evident in these thoma hangout pictures. lumine looks curious and determined to learn how to knit, paying close attention to thoma.
Genshin Impact fans urge Ufotable to pick Lumine as the MC for the upcoming anime adaptation
COMPLETED MATCH - Lumine vs. Aether by Lumibunflowers on DeviantArt
lumine and aether (genshin impact) drawn by hozumi_rino | Danbooru
samijen — my headcanon for aether vs lumine lmao
The moment you realise Aether and Lumine have defferent stats!! Genshin Impact | HoYoLAB
Spoilers] Who wore it better? Genshin Impact | HoYoLAB