Except for any girls, they resemble the girls from Sayonara Zetsubo Sensei, like "Harumi Fujiyoshi" at left-up corner and the cell phone maniac, Otanashi Meru at middle, that have a big shell. btw if the girl with the drum kit, if she really is Kobushi Abiru, then the eyepatch is wrong coz it's right eye, not left one. at the end, they have the same school uniform :P
