(COMIC1☆4) [Studio N.BALL (Haritama Hiroki)] Open Music! (K-On!) Pics (COMIC1☆4) [スタジオN.BALL (針玉ヒロキ)] Open Music! (けいおん!)

[Studio N.BALL (Haritama Hiroki)] Secret Music 4c (K-ON!) [English] [Belldandy100]

[Studio N.BALL (Haritama Hiroki)] Secret Music (K-On!)

(C79) [Studio N.BALL (Haritama Hiroki)] Sister Friend! (Ore no Imouto ga Konna ni Kawaii Wake ga nai)

[Studio N.BALL (Haritama Hiroki)] Seinaru, Kankei [Digital]

(C86) [Studio N.BALL (Haritama Hiroki)] Kono Bijutsubu Komon ni wa Mondai ga Aru! (Kono Bijutsubu ni wa Mondai ga Aru!) [Chinese] [辣鸡汉化组]

[Studio N.BALL (Haritama Hiroki)] Secret Music[ss] (K-ON!)

(C76) [Studio N.BALL (Haritama Hiroki)] Secret Music[S] (K-On!)

[Studio N.BALL (Haritama Hiroki)] Secret Music 4c (K-ON!)

(C78) [Studio N.BALL (Haritama Hiroki)] OPEN MUSIC!! (K-ON!)

(C86) [Studio N.BALL (Haritama Hiroki)] Kono Bijutsubu Komon ni wa Mondai ga Aru! (Kono Bijutsubu ni wa Mondai ga Aru!)