zantou, hijikata toushirou, gintama, bad id, bad pixiv id, 00s, 1girl, animal ears, animal print, bell, black hair, blush, breasts, clothes lift, cow ears, cow girl, cow print, cowbell, female focus, flat chest, genderswap, genderswap (mtf), horns, inverted nipples, lactation, looking at viewer, milking machine, naughty face, nipples, puffy nipples, ribs, shirt lift, short hair, small breasts, solo, upper body