Hattori Masahiko http://www.pixiv.net/member.php?id=157342

Also known as Macchi, Match, and 20twenty

Valentine Kiss Nanoha Doujin released May 17 '15 Nanoha x Fate Valentine's Yuri
Love Laika The Idolmaster Doujin released Jul 2 '16 Anastasia x Minami NSFW Yuri