Seen some
Aria - The Natural (TV)
Bakemonogatari (TV)
Gintama (TV)
(The) Girl Who Leapt Through Space (TV)
Hetalia - Axis Powers (TV)
Higurashi no Naku Koro ni Rei (OAV)
Planetes (TV)
Tears to Tiara (TV)
(The) Tower of Druaga: the Sword of Uruk (TV)
Utawarerumono (OAV)
Valkyria Chronicles (TV)
Zan Sayonara Zetsubō Sensei (TV)