oono tsutomu, kurona (neko musume michikusa nikki), neko musume michikusa nikki, 1girl, :<, animal ears, bare shoulders, barefoot, black hair, blush, cat ears, cat tail, feet, female focus, flat chest, looking at viewer, one-piece swimsuit, open mouth, paw pose, school swimsuit, short hair, simple background, sitting, soles, solo, spread legs, swimsuit, tail, tan, toe scrunch, toes, wet, yellow eyes