niina ryou, christiane barkhorn, erica hartmann, gertrud barkhorn, minna-dietlinde wilcke, strike witches, world witches series, plaid, bad id, bad pixiv id, 00s, 4girls, :p, animal ears, arms behind head, bed, blonde hair, blush, brown eyes, brown hair, closed eyes, curtains, dog ears, dog tail, dress, hair ornament, hair ribbon, hug, hug from behind, long hair, lying, military, military uniform, multicolored dress, multiple girls, on back, one eye closed, open mouth, panties, red eyes, red hair, ribbon, shirt, short hair, siblings, sisters, sitting, smile, sundress, sweat, tail, tongue, tongue out, twintails, underwear, window, wink, wolf ears, yellow eyes, yuri