2girls, ahoge, arcueid_brunestud, bare_shoulders, blush, breasts, collarbone, competition_swimsuit, covered_navel, greyscale, highleg, highleg_swimsuit, kara_no_kyoukai, kumakichi_(cost-lost), large_breasts, looking_at_viewer, monochrome, multiple_girls, one-piece_swimsuit, parted_bangs, ryougi_shiki, short_hair, smile, swimsuit, thighs, tsukihime