After getting revenge on the Thulcaan Empire, Jack Valantier took his last breath. But just when he thinks it’s all over, he finds himself transported back to when he was 14! From his negligent and wicked family to his loyal servant and caring sister, it’s all just as he had remembered. But this time, Jack is armed to the teeth with decades of experience from his previous life! He’s ready to give them hell, and those that have wronged him will pay dearly. Because this time, he’s invincible.
Based on its tags, this is the kind of series where combat, chases and physical conflict drive most of the pacing, the setting runs on magic, non-human races or invented rules of its own and it originates from Korean comics.
Judging by the newest 12 chapters, new chapters have been landing almost daily. The latest one went up about 313 days ago.
New to Legendary Youngest Son Of The Marquis House? The run opens with Chapter 1. It has been on the site since 20 September 2023. The series page lists everything published since, oldest to newest.
| Alternative titles | Jack Be Invincible, Legendary Youngest Son of the Marquis House, The Margravial Household's Phenomenal Youngest Son, The Marquess's Youngest Son, The Youngest Son of a Marquis, 侯爵家の歴代最強の末息子 |
|---|---|
| Author | K(케이), Raccoon |
| Type | Manhwa |
| Genres | Action, Fantasy, Manhwa, Shounen |
| Chapters | 154 |
| Latest chapter | Chapter 145 |
| Last updated | 24 September 2025 |
Legendary Youngest Son Of The Marquis House currently has 154 chapters on MangaOwl. The list was last updated on 24 September 2025.
The latest chapter listed is chapter 145, added on 24 September 2025.
Legendary Youngest Son Of The Marquis House is credited to K(케이) and Raccoon.
It is listed under Action, Fantasy, Manhwa and Shounen.
It also appears as Jack Be Invincible, Legendary Youngest Son of the Marquis House, The Margravial Household's Phenomenal Youngest Son and The Marquess's Youngest Son.
Start at Chapter 1, the first chapter listed. The series page carries every chapter in reading order.
Judging by the newest 12 chapters, new chapters have been landing almost daily. The latest one went up about 313 days ago.
Yes. All 154 chapters currently listed can be read in the browser at no cost, with no account required.
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Readers who follow Legendary Youngest Son Of The Marquis House usually work their way through the Action, Fantasy and Manhwa sections next. Genre listings put the most recently updated series first, which makes it easy to spot what is actively running.
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