koizumi amane, tsukishima kei, tsukishima kei (chikan senyou sharyou), chikan senyou sharyou, game cg, third-party edit, 1girl, ahoge, blue hair, blush, breasts, breasts apart, dutch angle, embarrassed, exhibitionism, female focus, female masturbation, fingering, from above, green eyes, looking down, masturbation, medium breasts, nipples, nude, open mouth, public indecency, pussy, short hair, sitting, solo, spread legs, sweat, train, train interior, uncensored, urethra, wristband