Question: Who is the director of Attack on Titan?

Context paragraphs:
Spoof on Titan: Spoof on Titan (Japanese: 寸劇の巨人 , Hepburn: Sungeki no Kyojin , "Titan Short Skits") is a Japanese 4-panel manga written and illustrated by hounori.  The series is a parody-spinoff of Hajime Isayama's popular "Attack on Titan" manga.  It was launched in both Japanese and English on Kodansha and DeNA's manga app Manga Box on December 4, 2013, and ran until December 31, 2014.

Attack on Titan: Humanity in Chains: Attack on Titan: Humanity in Chains (進撃の巨人～人類最後の翼～ , Shingeki no Kyojin ~Jinrui Saigo no Tsubasa~ , lit.  "Attack on Titan: The Last Wings of Humanity") , known in Europe as Shingeki no Kyojin: Humanity in Chains, is an action game developed by Spike Chunsoft for the Nintendo 3DS, based on Hajime Isayama's "Attack on Titan" manga series.  The game was originally released in Japan on December 5, 2013, with an updated version, "Attack on Titan: Jinrei Saigo no Tsubasa CHAIN", released on December 4, 2014.  This version of the game was localized by Atlus and released on the Nintendo eShop in North America on May 12, 2015, and in Europe on July 2, 2015.

Attack on Titan (film): Attack on Titan (進撃の巨人 , Shingeki no Kyojin ) is a 2015 Japanese film based on the manga of the same name by Hajime Isayama.  The film is directed by Shinji Higuchi, written by Yūsuke Watanabe and Tomohiro Machiyama and stars Haruma Miura, Hiroki Hasegawa, Kiko Mizuhara, Kanata Hongō, Takahiro Miura, Nanami Sakuraba, Satoru Matsuo, Shu Watanabe, Ayame Misaki, Rina Takeda, Satomi Ishihara, Pierre Taki and Jun Kunimura.  In "Attack on Titan" Eren Yeager, his adoptive sister Mikasa Ackerman, and his childhood friend Armin Arlert, join the Survey Corps, a military corporation to fight gigantic humanoids called the Titans after their hometown is attacked by a Colossal Titan.  The film is split into two parts, with the first part released in Japan on August 1, 2015 and the second part (subtitled End of the World) released on September 19, 2015.

Attack on Titan: No Regrets: Attack on Titan: No Regrets (Japanese: 進撃の巨人 悔いなき選択 , Hepburn: Shingeki no Kyojin Kui Naki Sentaku ) is a Japanese manga series written by Gun Snark and illustrated by Hikaru Suruga, based on a visual novel of the same name.  The series is a spinoff of Hajime Isayama's popular "Attack on Titan" (進撃の巨人 , Shingeki no Kyojin ) manga.  The story follows Levi Ackerman before he joins the Survey Corps.

Attack on Titan: Before the Fall: Attack on Titan: Before the Fall (進撃の巨人 Before the fall , Shingeki no Kyojin: Before the Fall ) is a series of Japanese light novels written by Ryō Suzukaze and illustrated by THORES Shibamoto.  The novels began publication in 2011.  The series is a prequel to Hajime Isayama's "Attack on Titan" manga.

Attack on Titan: Smoke Signal of Fight Back: Attack on Titan: Smoke Signal of Fight Back (進撃の巨人 ATTACK ON TITAN 反撃の狼煙) is a live-action web miniseries, a spin-off of the Attack on Titan film directed by Shinji Higuchi.

Mike McFarland: Michael Charles McFarland is an American voice actor and ADR director who works on English dubs of Japanese anime at Funimation, originating the voice of Master Roshi and Yajirobe in their dubs of "Dragon Ball" and "Dragon Ball Z".  Other roles include Jean Havoc in "Fullmetal Alchemist", Buggy the Clown in the Funimation dub of "One Piece", and Jean Kirstein in "Attack on Titan".  He has voice directed on multiple Funimation titles including "Dragon Ball", "Fullmetal Alchemist", "Case Closed", and "Attack on Titan", the "Rebuild of Evangelion" films, and "Summer Wars".

Attack on Titan: Lost Girls: Attack on Titan: Lost Girls (進撃の巨人 LOST GIRLS , Shingeki no Kyojin: Lost Girls ) is a Japanese novel written by Hiroshi Seko.  The book is a spinoff of the manga series "Attack on Titan" by Hajime Isayama.  A manga adaptation began serialization in August 2015 and ran until May 2016.  A three-part original anime DVD is set to be released on December 8, 2017, April 9, 2018 and August 9, 2018 with the 24th, 25th and 26th limited edition volumes of the original manga, respectively.

Titan Books: Titan Publishing Group is an independently-owned British publishing company, established in 1981.  It is based at offices in London's Bankside area.  The books division has two main areas of publishing: film and television tie-ins, and cinema reference books; and graphic novels and comics references and art titles.  The company is a division of Titan Entertainment Group, which also owns Titan Magazines.  As of 2016, Titan Books' editorial director is Laura Price.

Attack on Titan: Junior High: Attack on Titan: Junior High (進撃！巨人中学校 , Shingeki!  Kyojin Chūgakkō , lit. " "Attack!  Titan Junior High"") is a Japanese comedy manga series written and illustrated by Saki Nakagawa and published in "Bessatsu Shōnen Magazine" since 2012.  The series is a parody of Hajime Isayama's popular manga series "Attack on Titan" (進撃の巨人 , Shingeki no Kyojin ) .

Supporting paragraphs: Attack on Titan: Smoke Signal of Fight Back Attack on Titan (film)
Answer: Shinji Higuchi