Dungeon Haishin wo Kiriwasurerta Yuumei Haishinsha wo Tasuketara, Densetsu no Tansakusha toshite Bazuri Hajimeta ~Inkya no Ore, Nazo Skill da to Omotteita "Rule Mushi" de Ukkari Musou~Dungeon Haishin o Kiriwasureta Yuumei Haishinsha o Tasuketara, Densetsu no Tansakusha to shite Bazuri Hajimeta: Inkya no Ore, Nazo Skill dato Omotteita "Rule Mushi" de Ukkari Musou; ダンジョン配信を切り忘れた有名配信者を助けたら、伝説の探索者としてバズりはじめた　～陰キャの俺、謎スキルだと思っていた《ルール無視》でうっかり無双～; I Accidentally Became a Legendary Explorer After Saving a Famous Streamer Who Forgot to End Their Dungeon Stream

Kirishima Chikushi, a second-year high school student, is a true introvert who is even looked down upon by underclassmen. He is granted a mysterious skill called 'Rule Ignorance,' but he doesn't know how to use it, leaving him stagnating both as a student and as an explorer. One day, he encounters a famous streamer, Ayatsuki Miru, in a dungeon. Miru, who is streaming the sudden appearances of powerful 'Emergency Monsters' in dungeons, struggles against their overwhelming strength and finds herself in mortal danger! Just as Chikushi tries to intervene and help, his mysterious skill 'Rule Ignorance' awakens!