Marriage Toxin, Vol. 9: Volume 9
By (Author) Joumyaku
Illustrated by Mizuki Yoda
Viz Media, Subs. of Shogakukan Inc
Viz Media, Subs. of Shogakukan Inc
16th December 2025
United States
General
Fiction
Graphic novel / Comic book / Manga: Action and adventure
Graphic novel / Comic book / Manga: Humorous
Paperback
208
Width 127mm, Height 191mm
137g
Gero may be a master assassin, but hes 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 yetgetting married! Gero couldnt be more clueless when it comes to dating, butthankfully, 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 hitchedeven if they have to take on the entire criminal underworld in the process!
Thanks to the help of Sound Master Naruko, Gero is fully recovered and ready to rescue Himi from a wedding from hell! But Ghost Master Sakazuki lies in wait, with plenty of tricks up his sleeve. And even if Gero manages to save Himi, will he ever realize her true feelings for him
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+.