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Marriage Toxin, Vol. 12

By Joumyaku
Series: Marriage Toxin
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Brief Description
Gero may be a master assassin, but he’s not exactly killing it in the romance department! Can marriage swindler Kinosaki help him find true love?Poison Master Hikaru Gero is about to take on his most challenging assignment yet—getting married! Gero couldn’t be more clueless when it... Read More
Format: Paperback / softback
$2099
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Releases 16th June 2026 (Approx. Date) Pre-order  "Marriage Toxin, Vol. 12" now to secure your copy from our first shipment

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Gero may be a master assassin, but he’s not exactly killing it in the romance department! Can marriage swindler Kinosaki help him find true love?

Book Hero Magic formatted this description to make it easier to read. While it's new and still learning, it may not be perfect - your feedback is welcome! Description
Gero may be a master assassin, but he’s not exactly killing it in the romance department! Can marriage swindler Kinosaki help him find true love?

Poison Master Hikaru Gero is about to take on his most challenging assignment yet—getting married! Gero couldn’t be more clueless when it comes to dating, but thankfully, marriage swindler Mei Kinosaki knows everything there is to know about love. Together, this unlikely pair is going to do whatever it takes to get Gero hitched—even if they have to take on the entire criminal underworld in the process!

Himekawa has made quite the name for herself as an art thief, but when she suddenly finds herself in need of a partner in crime, Hamster Master Arashiyama is just the girl for the job! While it’s not the partnership Gero expected to see formed in his quest for marriage, that won’t stop this new dynamic duo from taking the criminal underworld by storm! 

Series: Marriage Toxin

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Book Details

INFORMATION

ISBN: 9781974761074

Publisher: Viz Media, Subs. of Shogakukan Inc

Format: Paperback / softback

Date Published: 07 May 2026

Country: United States

Imprint: Viz Media, Subs. of Shogakukan Inc

Contributors:

  • Illustrated by Mizuki Yoda
  • By Mizuki Yoda

Audience: General / adult

DIMENSIONS

Width: 127.0mm

Height: 191.0mm

Weight: 142g

Pages: 216

Collections

Fiction Graphic Novels Joumyaku Manga Pre-order Graphic Novels Pre-orders Pre-orders by Release Date Series: Marriage Toxin

About the Author

Joumyaku kicked off his career in 2021 when he wrote two one-shots, “Hyper Hard Special Mission” and “Reisougyou no Arai-kun” (Ghost Sweeper Arai-kun), published in back-to-back months of Jump+. The following year, Joumyaku partnered with Mizuki Yoda to release his first serialization, Marriage Toxin.

Mizuki Yoda first hit the manga scene with his one-shot “Jigoku no Sata mo Ryuu Shidai” (The State of Hell Depends on the Dragon), which was published in Shonen Jump NEXT! in 2015. In 2016, he and Tomohide Hirao teamed up to create the one-shot “Legacy,” which ran in Weekly Shonen Jump as part of the Gold Future Cup. His first series, Ne0;lation, was completed in 2019, and three years later he began working on his next series, Marriage Toxin, for Jump+.

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