The Plain Salary Man Turned Out to Be a Hero: He was Invincible, Only to Be Exposed on His Niece's Dungeon Stream

Jimi na Ojisan, Jitsu wa Eiyuu datta. ~Jikaku ga Nai Mama Musou 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
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The Plain Salary Man Turned Out to Be a Hero: He was Invincible, Only to Be Exposed on His Niece's Dungeon Stream

Jimi na Ojisan, Jitsu wa Eiyuu datta. ~Jikaku ga Nai Mama Musou Shitetara, Mei no Dungeon Haishin de Sarasareteta you desu~

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～ • ?An Unaware Old Man Becomes an Overpowered StreamerKeita Sato, a 41-year-old single office worker, spends his days handling stress and tedious work tasks. His unique way of unwinding involves diving solo into modern-day dungeons and using ferocious monsters as batting practice! One day, his niece Hikari secretly follows him and ends up streaming his dungeon exploits...!! • ?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 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～ • ?Jimi na Ojisan, Jitsu wa Eiyu deshita.: Jikaku ga Nai Mama Muso Shitetara, Mei no Dungeon Haishin de Sarasareteta You desu
Suggestive
Origination: Manga
Demographic: Seinen
Published: 2024
Status: 📖 Ongoing
Translation: 📖 Ongoing
Ranked: #1,983
Followed by 9,792 users
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Keita Sato (41, single) is overworked at his corporate job, dealing with tedious and stressful tasks day in and out. How does he relieve his stress? By sneaking into modern-day "dungeons," using them as a batting cage, and blasting away ferocious monsters! One day, his live-in niece Hikari secretly follows him and livestreams his adventures, only for his unbelievable strength to go crazy viral!! Keita unknowingly captures the attention of not only viewers, but other big-name streamers.

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More Info

Authors: Mikawa Ghost, Imano Yuki
Artists: Imano Yuki
Genres: Action, Adventure, Ecchi
Theme: Monsters, Office Workers
Format: Adaptation
Publishers: Shueisha

Tags

  • Overpowered Protagonist
  • Livestreaming
  • Middle-Aged Protagonist
  • Divorced Character/s
  • Protagonist Strong from the Start
  • Dungeon/s
  • Important Non-Romantic Relationship/s
  • Based on a Light Novel
  • Misunderstanding/s
  • Salaryman
  • Brother-Sister Relationship
  • Older Male Younger Female
  • Adult Male Lead
  • Stalkerish Female Lead
  • Niece/s
  • Older Sister
  • Kind Protagonist
  • Adult Protagonist
  • Stress
  • Uncle-Nephew Relationship
  • Male Protagonist
  • Younger Brother
  • Uncle
  • Modern Era

Referrers

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Raws
English
shueisha

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Kentacle avatar

Kentacle

6 reviews489 follows

Posted 12:20 AM · Jul 26, 2026

Recommended
6/10
Reviewed through Ch. 32 · 91%

Untitled review

Almost every male character that isnt the MC is a piece of shit and every female characters likes him. This is obviously a lot of harem bait but the MC himself is pretty good. Fuck the author tho for his tastes

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