"Hello Hedgehog") is a Japanese manga series written and illustrated by Kenshi Hirokane.

The series follows the pair in an episodic format as they solve cases covering a range of themes and subjects, from realistic occurrences to paranormal phenomena.

[1] In 1991, a live-action film adaptation of Hello Harinezumi starring Toshiaki Karasawa as Goro was released.

[2] In 1992, an original video animation (OVA) titled Hello Harinezumi: Domain of Murder (ハロー張りネズミ〜殺意の領分〜) was released, directed by Hiroshi Morioka and Iku Suzuki [ja], and featuring Shigeru Nakahara as the voice of Goro.

The OVA was licensed by Central Park Media for release in North America, where it was titled simply Domain of Murder.