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Alternative Titles

Synonyms: Isack, Isaac
Japanese: イサック
English: Issak
More titles


Type: Manga
Volumes: Unknown
Chapters: Unknown
Status: Publishing
Published: Jan 25, 2017 to ?
Genre: Action Action
Theme: Historical Historical
Demographic: Seinen Seinen
Serialization: Afternoon
Authors: Song, Ji-Hyung (Art), Makari, Shinji (Story)


Score: 7.431 (scored by 10571,057 users)
1 indicates a weighted score.
Ranked: #35342
2 based on the top manga page. Please note that 'R18+' titles are excluded.
Popularity: #3263
Members: 6,353
Favorites: 26

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Ranked #3534Popularity #3263Members 6,353
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Chapters: /?
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Volume 1


During the 17th century, Europe is being devastated by the Thirty Years' War. Although the Netherlands send reinforcements to The Holy Roman Empire, almost all of them end up deserting, with the exception of a single Japanese man.

Travelling all the way from East Asia, Issak is searching for the man who murdered his master and stole something precious to him. Suspecting the killer has joined one of the opposing armies, Issak participates in the war as a mercenary, hoping to find and end his nemesis once and for all.

[Written by MAL Rewrite]


Issak has been published digitally in English by Kodansha USA since August 15, 2023.


Shibakusa, Shihori
Shibakusa, Sahei
von Wittelsbach, Heinrich


Jun 21, 2020
Preliminary (21/? eps)
I've waited for so long. SO LONG!!!! "Its such a good setting, WHY HAS NOBODY USED IT BY NOW!" Is what I was thinking of for years. I am a total history nerd, and an avid consumer of Japanese media, and while I love every manga with a historical setting, like Vagabond, Vinland Saga, Kingdom, and so on, I ALWAYS wanted a manga set in the Holy Roman Empire(HRE). Its just such an interesting setting, from the Protestant Wars that occurred in the 16th, 17th, and 18th centuries, to the Investiture Controversy that caused so much fuss in the 11th century going forward, and even ...
Sep 6, 2020
Preliminary (26/? eps)
Issak brings together two distinct battlefields, the Japanese and the European, bringing a clash between two Japanese snipers, who venture out as mercenaries while one of them seeks his revenge, with everything going on in the ancient Holy Roman Empire in the 17th century. The way in which the author approaches the battles shows that he had a lot of study of him, to bring about such realistic clashes. Issak is a perfect work for history fans, in which they will be impressed with the correct traces of European armor.

Now the downside, Issak fails to try to bring in interesting characters, with the group around ...
Jul 18, 2022
Preliminary (35/? eps)
What started as a masterpiece quickly started to go to ruin after chapter 6 like the calm before the storm.

The first 6 chapters were a new ray of light that had you not knowing what was coming next, nothing could be predicted and gave a strong ray of excitement chapter after chapter, unfortunately, it all tumbles downhill from chapter 7 onwards...

Initially, I wanted to rate this 10 then 6 then 3 and now 2 every chapter I read it gets ridiculous full-on nonsense.

Story: The first 6 chapters are clearly written by someone else aside from the rest of the story, it's like ...

Interest Stacks

26 Entries · 5 Restacks
22 Entries · 12 Restacks
45 Entries · 242 Restacks


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Recent Forum Discussion

Poll: Issak Chapter 9 Discussion
Major_Gilbert - Mar 23, 2019
0 repliesby Major_Gilbert »»
Mar 23, 2019 3:20 AM
Poll: Issak Chapter 7 Discussion
Major_Gilbert - Jan 18, 2019
0 repliesby Major_Gilbert »»
Jan 18, 2019 11:26 AM
Poll: Issak Chapter 6 Discussion
Major_Gilbert - Oct 13, 2018
0 repliesby Major_Gilbert »»
Oct 13, 2018 9:43 AM
Poll: Issak Chapter 3 Discussion
SurgeonOfDeath7 - May 22, 2018
0 repliesby SurgeonOfDeath7 »»
May 22, 2018 1:09 PM
Poll: Issak Chapter 1 Discussion
Stark700 - Mar 8, 2018
0 repliesby Stark700 »»
Mar 8, 2018 5:42 AM