2girls, armpits, ass_visible_through_thighs, blue_buruma, blue_sports_bra, blush, braid, buruma, buta_tsuzumi, clenched_teeth, closed_eyes, elbow_pads, flat_chest, frilled_headwear, frilled_skirt, frills, from_behind, full_nelson, idolmaster, idolmaster_cinderella_girls, limited_palette, looking_at_another, mask, motion_lines, multiple_girls, navel, open_mouth, outstretched_arms, partially_colored, red_skirt, red_sports_bra, restrained, sakurai_momoka, sasaki_chie, short_hair, skirt, smile, sports_bra, stomach, sweat, teeth, thighs, underwear, white_background, wrestling