k-on!!, k-on series, kotobuki tsumugi, multiple girls, sakuragaoka high school uniform, tainaka ritsu, hirasawa yui, school uniform, brown hair, 3girls, blonde hair, short hair, long hair, parody, hairband, couch, thighhighs, akiyama mio, winter uniform, hair ornament, pantyhose, closed eyes, hairclip, skirt, socks, jacket