013 (hamsasuke), eri (blue archive), blue archive, highres, 3girls, @ @, blazer, blush, bow, bowtie, chair, coat, faceless, faceless female, greyscale, hair over eyes, halo, hands up, hug, hug from behind, jacket, jewelry, long hair, long sleeves, monochrome, multiple girls, multiple rings, necktie, on chair, open clothes, open coat, open mouth, puff of air, ring, shaded face, shirt, sitting, sitting on lap, sitting on person, skirt, yuri