Ryoji Hirano

Ryoji Hirano, born March 23, 1994, is a Japanese mangaka and the author of several of Kimetsu no Yaiba's spin-off series, including Stories of Water and Flame and Kimetsu no Aima!.

History
Hirano's debut work was a one-shot named BOZE, which was released on March 28, 2016. This later became a serialized manga under the new name BOZEBEATS (ボウズビーツ), which ran from January 15, 2018 to April 16 of the same year, spanning 15 chapters across 2 volumes.

Their next work was another one-shot called Yusha Goikko no Kaerimichi (ごのり), which was 52 pages long and released on August 2, 2018.

On April 1, 2019, they released their first Kimetsu no Yaiba-related spin-off series, Giyu Tomioka's Story, which was 2 chapters long and ended on the 8th of the same month.

Later that month, they began the comedy 4-koma spin-off Kimetsu no Aima! (きめつのあいま!). This series lasted for 26 1-page chapters and was completed on September 29, 2019.

Their next work is ongoing, and is a Fate series side story named Teito Seihai Kitan: Fate/type Redline (Fate/type Redline) that they began on December 20, 2019.

On October 12, 2020, they released Kyojuro Rengoku's Story, which was 2 chapters long and ended on the 17th of the same month.

On December 4, 2020, their 3 Kimetsu no Yaiba spin-offs were compiled into one one tankobon volume.

Trivia

 * Hirano's Twitter icon is from the cover page of their first one-shot.