1girl, 2023, animal_ears, black_footwear, black_hairband, blonde_hair, blue_leotard, blue_necktie, blush, breasts, brown_thighhighs, cross, cross_earrings, detached_collar, earrings, fake_animal_ears, fake_tail, green_eyes, hair_ornament, hair_ribbon, hairband, high_heels, i_can't_handle_my_former_bookworm_little_sister_now_that_she's_a_slut!, jewelry, kneeling, large_breasts, leotard, long_hair, looking_at_viewer, natsuki_(bookworm_little_sister), necktie, original, parted_lips, playboy_bunny, rabbit_ears, rabbit_tail, red_ribbon, ribbon, smile, solo, tail, teeth, thick_thighs, thighhighs, thighs, tsukumiya_amane, twintails, wrist_cuffs