Negi Haruba graduated from the manga department of Trident College of Design in 2013. He won an award in the 89th Weekly Shounen Magazine Newcomer Manga Award organized by Kodansha with the one-shot manga Coward Cross World. The work was published in Magazine SPECIAL 2013 as his debut.
In 2014, he won a Gold Award for the one-shot Ura Sekai Communication in the 21st Dengeki Grand Prize sponsored by KADOKAWA and ASCII Media Works. This work was later published in Weekly Comic Dengeki Daioh magazine in September 2014.
On January 25, 2017, wrote yet another one-shot, titled 5toubun no Hanayome. Receiving positive responses for his work, an official serialization of the one-shot was announced and published in Weekly Shounen Magazine on August 9, 2017. A year later, the manga series was announced to get an anime adaptation on August 8, 2018, and to be aired on TBS from January 1, 2019. A second season started airing January 8, 2021.
He's married and has a child.
Friends with Irohara Mitabi.
Worked as an assistant for Fujimura Akeji in Kami-sama no Iutoori.
Utsumi Yae and Naito Marcey were his assistants in Rengoku no Karma and 5toubun no Hanayome respectively.
Titles
Go! Go! Loser Ranger!
The Five Wedded Brides
Negi Haruba Short Story Collection: Mitoubun
5Toubun no Hanayome - Magical Girl Raiha with The Quintuplet of Witch
The Quintessential Quintuplets - Full Color Edition
A Random Single Page Manga by Haruba Negi
Vampire Killer
Coward Cross World
Ura Sekai Communication
The Five Wedded Brides