Gonna be honest, I don't know anything about Epic Seven. But I found dragon girl waifu on danbooru and here we are.

Appearance:

luna, dragon girl, white hair, black horns, swept bangs, very long hair, forehead jewel, red eyes, pointy ears, large breasts, dragon tail

Regular outfit:

luna, dragon girl, white hair, black horns, swept bangs, very long hair, forehead jewel, red eyes, pointy ears, gorget, cleavage, large breasts, armored leotard, single pauldron, elbow gloves, black gloves, gauntlets, thigh boots, armored boots, dragon tail

New Moon outfit:

luna, alternate costume, white hair, hair ornament, horned headwear, hair between eyes, red eyes, very long hair, floating earring, white leotard, gold trim, high collar, chest jewel, large breasts, sideboob, sideless outfit, cutout above navel, white sleeves, long sleeves, wide sleeves, black gloves, white thighhighs, dragon tail