Colonel Aki — http://www.pixiv.net/member.php?id=573811

Also known as Sabai Shuppan

MadoMagi - Panic Track A Puella Magi Madoka Magica Doujin released Aug 17 '12 4-koma Comedy

MadoMagi - Panic Track B Puella Magi Madoka Magica Doujin released Sep 24 '12 4-koma Comedy

Cheibaa Zero Fate/X Doujin released Apr 24 '13 Chibi Comedy