3girls, o, arms_around_neck, arms_around_waist, ass, ass_visible_through_thighs, athletic_leotard, bad_pixiv_id, blonde_hair, blue_leotard, blush, breasts, brown_eyes, brown_hair, closed_mouth, covered_navel, girl_sandwich, girlfriend_(kari), green_eyes, highleg, highleg_leotard, hug, leotard, long_hair, looking_at_viewer, mochizuki_erena, multiple_girls, one_eye_closed, open_mouth, photoshop_(medium), red_eyes, red_leotard, ribbed_legwear, ribbed_thighhighs, sandwiched, sasahara_nonoka, shiina_kokomi, shindoi_akio, smile, standing, thighhighs, thighs, twitter_username, two-tone_leotard, white_leotard