gertrud barkhorn, strike witches, world witches series, derivative work, highres, non-web source, vector trace, 00s, 1girl, armpits, arms behind head, arms up, artistic error, blush, bra, brown eyes, brown hair, cowboy shot, female focus, grey bra, groin, lingerie, navel, panties, short hair, short twintails, solo, sports bra, stomach, stretching, transparent background, twintails, underwear, underwear only, yellow eyes