In 2013, Negi Haruba graduated from the manga department of Trident College of Design. He participated in the 89th Weekly Shōnen Magazine Newcomer Manga Award, organized by Kodansha, and won an award with the one-shot manga Coward Cross World (カワードクロスワールド?). The work was published in Magazine SPECIAL 2013 as his one-shot debut.
In 2014, he won a Gold Award in the Dengeki Comic Grand Prize of the 21st Dengeki Grand Prize organized by KADOKAWA and ASCII Media Works with the one-shot Back World Communication (裏世界コミュニケーション?).
In 2014, Negi Haruba drew Rengoku no Karma for the author Shun Hirose in Kodansha. The series ended in 5 volumes.
In 2015, he wrote the Oneshot Vampire Killer and publish it in Kodansha.
In February 2017, Negi wrote yet another Oneshot, 5Toubun no Hanayome in Kodansha. He receives positive feedback the fa and readers. The one-shot began its official serialization in August of the same year.
In August 2018, Negi's 5Toubun no Hanayome received an anime adaptation that is planned to air in January 2019.
- Rengoku no Karma (煉獄のカルマ Rengoku no Karma?; English "Karma of Purgatory"): Negi Haruba was involved in the illustration of Rengoku no Karma, a manga series authored by Shun Hirose (廣瀬 俊?). The series began serialization in Weekly Shōnen Magazine and ended at the fifth volume in 2015 (October 22, 2014 — August 20, 2015).
- 5Toubun no Hanayome (五等分の花嫁?) as creator and author. Published in Weekly Shōnen Magazine since 2017 and is ongoing (August 9, 2017 — ongoing)
- Coward Cross World (カワードクロスワールド?) in Magazine SPECIAL 2013 Issue 4.
- Back World Communication (裏世界コミュニケーション?) in Monthly Comic Dengeki Daioh in September, 2014.
- Vampire Killer (ヴァンパイアキラー?) in Weekly Shōnen Magazine 2016 Merger Issue 2 and 3.
- 5Toubun no Hanayome (五等分の花嫁?) in Weekly Shōnen Magazine 2017 Issue 8.
- Negi drew the ending card for episode 2 of the Boarding School Juliet anime series.
Illustrations and Sketches
- Twitter account @negi_haruba: https://twitter.com/negi_haruba
- Pixiv account: https://www.pixiv.net/member.php?id=152375
- Tinami account: http://www.tinami.com/creator/profile/13158
- Old twitter (deleted, the current @negi365 is a different account): http://twitter.com/negi365
- In the Dengeki Comic Grand Prize division of the 21st Dengeki Grand Prize, two people have won gold medals, and the other is Nio Nakatani (
仲谷 鳰Nakatani Nio?), who is known for the popular series Bloom Into You (やがて君になる Yagate Kimi ni Naru?).
- Negi's first Twitter avatar from the 5Toubun no Hanayome series is Yotsuba.