Shūhō Imai, whose name also appears as Shuuhou Imai, is a Japanese creator best known as the original author and director of the foundational works in the Tokyo Majin Gakuen franchise. His primary role is as a game director, writer, and story supervisor rather than a manga artist or screenwriter, though his creative vision has defined the series across multiple media.

Imai first established the Tokyo Majin Gakuen universe with the release of the video game Tokyo Majin Gakuen: Kenpūchō for the PlayStation on June 18, 1998. He served as the director for this game, which was developed by Shout! Design Works and published by Asmik Ace. This title is a tactical role-playing game that blends interactive visual novel-style storytelling with isometric turn-based battles, and it forms the core of the franchise's setting. A fan disc titled Tokyo Majin Gakuen: Oboro-Kitan followed on April 12, 1999, adding new scenarios and character endings.

The original video game served as the genesis for multiple manga adaptations, all of which involved Imai as a supervisor or co-creator. The first manga adaptation of Tokyo Majin Gakuen Kenpūchō was illustrated by artist Asato Kina, with the story supervised by Imai. It was serialized in Square Enix's GanGan Wing Comics from December 27, 1999, to February 10, 2001, and compiled into four volumes. This manga adaptation is what later inspired the anime series. A spin-off manga titled Youto Chinkonka: Tokyo Requiem, focusing on the character Kureha Mibu, was created by Imai alongside artist Ayumi Kasai and ran from October 25, 1999, to August 2001, released in two volumes.

When the franchise was adapted into an anime, Imai again served in a supervisory capacity. The anime television series, known as Tokyo Majin or Tokyo Majin Gakuen Kenpucho: Tou, premiered in Japan on January 19, 2007, and ran for twenty-six episodes. While the anime was directed by Shinji Ishihira and written by Toshizo Nemoto, the story rights were overseen by Imai and the Majin Production Committee. Following the anime's broadcast, a manga version of the anime itself was drawn by artist Ryou Sakura, with Imai again credited as a story supervisor. This manga was also serialized in GanGan Wing Comics and released in three volumes starting in 2007.

Imai's artistic identity is deeply tied to the Tokyo Majin Gakuen universe, which combines supernatural horror, action, and high school drama. The franchise is known for its complex narrative structure involving mystical martial arts, demons known as the Reborn Dead, and a central concept known as the Dragon Stream. The original game's protagonist, Tatsuma Hiyuu, and his group of students from Magami Academy who battle dark forces in Shinjuku, Tokyo, have remained the core of the series' enduring appeal. His significance in the industry lies in creating a transmedia franchise that originated as a Japan-exclusive video game but expanded into manga and an internationally licensed anime, demonstrating a model of cross-platform storytelling.