laevatein (la3vatein), surtr (arknights), arknights, commentary, highres, 1girl, alternate costume, arm at side, bag, blue skirt, casual, closed mouth, cross-shaped pupils, demon girl, demon horns, full body, hand up, horns, long hair, long sleeves, looking at viewer, multicolored hair, orange hair, pink shirt, pink shoes, purple eyes, red hair, shirt, shoes, short hair, shoulder bag, simple background, skirt, solo, standing, symbol-shaped pupils, twitter username, v-shaped eyebrows, very long hair, white background