1girl, belly, black_cape, cape, eyelashes, fangs, gradient_background, grey_eyes, halloween, halloween_costume, kunoichi_tsubaki_no_mune_no_uchi, loli, long_hair, looking_at_viewer, navel, ninja, open_mouth, outside_border, ponytail, red_background, riokasen, solo, tsubaki_(kunoichi_tsubaki_no_mune_no_uchi), vampire_costume