Writing under the pen name Koyoharu Gotouge, the author published the first chapter of the serialized Demon Slayer in 2016. That changed last year, when the animated film Demon Slayer: Kimetsu no Yaiba the Movie: Mugen Train logged the biggest opening weekend in Japan’s history and wound up grossing a record-setting $313 million-a surreal achievement that only deepened interest in the mysterious author and illustrator at the franchise’s heart.

Although Gotoge has not revealed their gender for privacy reasons, a Weekly Shonen Jump employee disclosed that the author is a woman.For almost two decades, Spirited Away was Japan’s highest-grossing movie of all time.

Koyoharu Gotoge also noted that Gintama is the manga they admired and decided to create Kimetsu no Yaiba.

Koyoharu Gotoge noted that Kimetsu no Yaiba was inspired by various manga, most notably Gintama, JoJo's Bizarre Adventure, Naruto, Bleach.

Kimetsu no Yaiba (2016) Weekly Shonen Jump 2016-11 Issue - 2020-24 Issue (Series).

Haeniwa no Zigzag (2015) Weekly Shonen Jump 2015-19 Issue (Oneshot).

Rokkotsu-san (2014) Weekly Shonen Jump 2014-39 Issue (Oneshot).

Monju Shiro Kyodai (2014) Jump Next 2014 vol.2 Issue (Oneshot).

Kagarigari (2013) Weekly Shonen Jump official site (Oneshot).

In February 2021, Gotoge commented that their next project will be a science fiction romantic comedy story. The series ended at 205 chapters on May 17th 2020 in issue 2020-24.

Kimetsu no Yaiba is a Demon-slaying manga loosely based on their first work Kagarigari. In 2016, Gotoge started their first serialization with Kimetsu no Yaiba ( 鬼 ( き ) 滅 ( めつ ) の ( の ) 刃 ( やいば ), Kimetsu no Yaiba ?), in Weekly Shonen Jump 2016-11 issue. The story is about Zigzag, who has a mysterious power to remove curses. The following year, 2015, Gotoge created a new 47 pages oneshot Haeniwa no Zigzag ( 蠅 ( はえ ) 庭 ( にわ ) のジグザグ, Haeniwa no Jiguzagu ?), published again in Weekly Shonen Jump 2015-21 issue. The oneshot was part of Jump's Golden Future Cup as entry #3. Later that year, they created a new 46 page oneshot titled Rokkotsu-san ( 肋 ( ろっ ) 骨 ( こつ ) さん, Rokkotsu-san ?), published in Weekly Shonen Jump 2014-39 issue. The next year, 2014, they published their debut in the Jump Next 2014 vol.2 issue, with a 45 page oneshot titled Monju Shiro Kyodai ( 文殊 ( もんじゅ ) 史 ( しろ ) 郎 ( う ) 兄 ( きょう ) 弟 ( だい ), Monju Shirō Kyōdai ?). Kagarigari is a 45-page Demon-Slaying manga.

At the age of 24, they participated in the 70th Jump Treasure Newcomer Manga Awards in 2013 with the work Kagarigari ( 過 ( か ) 狩 ( が ) り狩 ( が ) り, Kagarigari ?).

Koyoharu gotōge short stories