k-on!!, k-on series, kotobuki tsumugi, hirasawa yui, nakano azusa, sakuragaoka high school uniform, akiyama mio, multiple girls, tainaka ritsu, school uniform, 5girls, long hair, black hair, blonde hair, brown hair, short hair, twintails, closed eyes, hairband, parody, tears, hair ornament, open mouth, hairclip