Daisuke Ashihara is a Japanese manga artist best known as the creator of the science-fiction series World Trigger. Born in Tokyo on February 13, 1981, he was raised in Okayama Prefecture. His interest in manga was shaped by a childhood appreciation for series such as Doraemon and Black Jack. Following his high school graduation, he gained life experience working as a front desk clerk at a business hotel before beginning his professional artistic career.

Ashihara made his debut in 2008 with the one-shot Room 303, which earned recognition as a semifinalist in the 75th Tezuka Awards. The work was published in Weekly Shonen Jump that same year, formally launching his career as a manga creator. He continued to publish several short works over the following years, including the one-shots Super Dog Rilienthal, Trigger Keeper, and Talented Elite Jin. Super Dog Rilienthal became his first serialized work, running in Weekly Shonen Jump from 2009 to 2010.

In February 2013, Ashihara began serializing his most prominent work, World Trigger, in Weekly Shonen Jump. The series blends science fiction with strategic combat, following a defense organization that uses alien technology to battle interdimensional invaders. In a 2014 interview, Ashihara explained that the series originated from his desire to create a competitive shonen manga, but his editor encouraged him to pursue a more original concept. He cited the idea of making advanced technology accessible to all characters equally as a central premise, influenced by his long-standing appreciation for the futuristic concepts in Doraemon and the tactical elements in science fiction novels like Robert Heinlein’s Starship Troopers and Tunnel in the Sky. He also noted that while his previous series, Super Dog Rilienthal, focused on characters resolving problems through cooperation, World Trigger introduced a more serious competitive element where even weaker characters must rely on their own abilities.

The success of World Trigger led to a television anime adaptation produced by Toei Animation, which first aired in October 2014. Subsequent seasons continued the adaptation in later years. However, the manga’s publication faced interruptions due to Ashihara’s health. In late 2013, he was diagnosed with cervical myelopathy, a condition causing severe pain that at times made movement difficult. This resulted in extended hiatuses, and he considered ending the series. After his recovery, the serialization moved from Weekly Shonen Jump to Jump Square, a monthly magazine, beginning in December 2018 to allow for a less demanding work schedule.

Ashihara’s artistic identity includes recurring visual motifs, such as the use of three-shaped symbols in character facial expressions, a stylistic quirk often noted by readers. The influence of strategic thinking and group dynamics remains a consistent theme throughout his works, emphasizing tactical combat over sheer power. Despite significant health challenges that have impacted the publication schedule of his flagship title, his commitment to maintaining the quality and complexity of World Trigger has solidified his reputation as a dedicated creator within the manga industry.