Jimi na Ojisan, Jitsu wa Eiyu deshita.: Jikaku ga Nai Mama Muso Shitetara, Mei no Dungeon Haishin de Sarasareteta You desu
Alternative title: An Unaware Old Man Becomes an Overpowered Streamer, Jimi na Ojisan, Jitsu wa Eiyu deshita. - Jikaku ga Nai Mama Muso Shitetara, Mei no Dungeon Haishin de Sarasareteta You desu, The Plain Salary Man Turned Out to Be a Hero: He Was Invincible, Only to Be Exposed on His Niece's Dungeon Stream, The Plain Uncle Was Actually a Hero. He Was Unconsciously Invincible, and It Seems He Was Exposed in His Niece's Dungeon Stream, 地味なおじさん、実は英雄でした。 ～自覚がないまま無双してたら、姪のダンジョン配信で晒されてたようです～
Story Overview
Keita Sato, a 41-year-old single salaryman, is worn down by his exhausting corporate job and endless stress. His unusual way of blowing off steam is sneaking into modern-day “dungeons” and using them as a personal batting cage to smash ferocious monsters. One day, his live-in niece Hikari secretly follows him and livestreams his exploits, causing his unbelievable strength to go viral online. Without realizing it, Keita attracts the attention of countless viewers—and even famous top-tier streamers.