natsumi akira, akiyama mio, hirasawa yui, houraisan kaguya, inaba tewi, kotobuki tsumugi, reisen udongein inaba, shameimaru aya, tainaka ritsu, yagokoro eirin, don't say "lazy", k-on!, touhou, 4girls, akiyama mio (cosplay), cosplay, female focus, hair bun, hat, hirasawa yui (cosplay), kotobuki tsumugi (cosplay), mini hat, mini top hat, multiple girls, nail polish, parody, pink nails, single hair bun, tainaka ritsu (cosplay), top hat