melreon, arona (blue archive), blue archive, commentary, highres, 1girl, blue eyes, blue hair, blue halo, blue serafuku, choker, colored inner hair, crossed legs, hairband, halo, holding, long sleeves, looking at viewer, midriff, multicolored hair, navel, open mouth, pink hair, pleated skirt, school uniform, serafuku, simple background, skirt, smile, two-tone hair, white background, white choker, white hairband, white skirt