Touhou Project is a long-running Japanese bullet hell game series created by ZUN, and its distinctive sound effects have become part of its fan culture. The pichuun noise is one of the series' most recognisable short effects, widely shared in gameplay clips, fan edits and meme videos long after its first appearances in the games. Because it is so brief and instantly signals failure, creators keep reusing it as a punchline for deaths, missed shots and sudden defeats, even for viewers who have never played Touhou.