1girl, ahoge, armpits, arms_behind_head, arms_up, bikini, blue_eyes, blue_hair, breasts, covered_nipples, front-tie_bikini_top, front-tie_top, looking_at_viewer, navel, qkat_(arikawa-dou), short_hair, side-tie_bikini_bottom, simple_background, solo, super_real_mahjong, swimsuit, white_background, white_bikini, yuu_(super_real_mahjong)