is a Japanese manga series written and illustrated by Akihiro Ito. It started in Shogakukan's manga magazine Monthly Sunday Gene-X in August 2000; it went on hiatus in June 2009, resuming after a nearly 12-year hiatus in May 2021, and finished in August 2025. Its chapters were collected in nine volumes.
Written and illustrated by Akihiro Ito, Wilderness started in Shogakukan's manga magazine Monthly Sunday Gene-X on August 19, 2000. Following the 68th chapter, published on June 19, 2009, Ito put the manga on hiatus due to a sickness that rendered him unable to use his dominant right hand for drawing. After a nearly 12-year hiatus, the manga resumed in the magazine on May 19, 2021. The series finished on July 18, 2025. Shogakukan collected its chapters in nine volumes, released from September 19, 2001, to October 17, 2025.