collage (artist), akiyama mio, k-on!, 1girl, arms up, artificial insemination, automated reproduction, bdsm, between breasts, black eyes, black hair, blush, bondage, bound, breasts, bubble, cowboy shot, feeding, female focus, force-feeding, implantation, in container, intubation, large breasts, long hair, machine, medium breasts, navel, nipples, nude, oxygen mask, pipelining, pussy, restrained, simple background, solo, stasis tank, tube, uncensored, underwater