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