southernsandbox, arona (blue archive), blue archive, highres, 1girl, artist name, blue eyes, blue hair, blue shirt, blush, bow, braid, card, chinese text, colored inner hair, dated, eyes visible through hair, hair over one eye, hair ribbon, hairband, halo, hand on own stomach, hands on own stomach, long sleeves, looking at viewer, lying, multicolored hair, navel, on back, open mouth, pink hair, pleated skirt, puffy long sleeves, puffy sleeves, ribbon, sailor collar, school uniform, serafuku, shirt, short hair, single braid, skirt, solo, streaked hair, two-tone hair, white bow, white ribbon, white sailor collar, white skirt