K-ON! by Horiguchi Yukiko #424079
Mangaka: Horiguchi Yukiko,
Uploaded by SubaruSumeragi Jan 30, 2011,
Horiguchi Yukiko, Hikiyama Kayo, Kyoto Animation, K-ON!, Megami #130 2011-03, Hirasawa Yui, Akiyama Mio, Kotobuki Tsumugi, Tainaka Ritsu, Chocolate Heart, Scan, Magazine (Source)