riel (rielilu), kazusa (blue archive), blue archive, absurdres, commentary, highres, 1girl, alternate costume, animal ears, bag, bell, bikini, black hair, blush, breasts, cat ears, christmas, closed mouth, collarbone, colored inner hair, elbow gloves, extra ears, frilled bikini, frills, gloves, hat, holding, holding bag, looking at viewer, medium breasts, multicolored hair, navel, neck bell, pink hair, red bikini, red gloves, red hat, santa hat, short hair, solo, swimsuit, two-tone hair