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