Marriagetoxin Episode 4 Story & Preview Cuts Released: Gero’s New Mission is Bodyguarding a CEO’s Daughter

The story and preview images for Episode 4 of the TV anime Marriagetoxin (JP: マリッジトキシン) have been revealed. This episode will air on Tuesday, April 28 at 11:00 PM (JST), and will later be available on various international streaming platforms.

Episode 4 Story

Gero's latest assignment is to serve as a bodyguard for Shiori Ureshino, the daughter of a major corporation’s president. To fulfill this mission, Gero must go undercover as a student at the university Shiori attends. Having never experienced university life before, Gero finds his eyes sparkling with excitement as he participates in lectures and social gatherings for the very first time.

However, the joys of campus life are short lived. Gero and his companions are suddenly ambushed at the university by assassins targeting Shiori. While managing to protect her and continue his life as a student, Genya Naruko, a Sound User, is steadily finalizing his preparations for Shiori's assassination.

Introduction

Hikaru Gero, a young man inheriting this deadly lineage, has lived his entire life in the underworld, far removed from the touch of romance. To him, the concept of "marriage" was a distant dream. However, to ensure the "Poison User" bloodline survives, the head of the Gero clan issues a cold ultimatum to Hikaru's sister: she will be forced to produce an heir.

Desperate to protect his sister and resolve the succession crisis, Hikaru crosses paths with his latest target—the master marriage swindler, Mei Kinosaki. In a sudden turn of events, Hikaru decides his best option is to get married himself and recruits Mei as his advisor right then and there.

"That’s a first... for a 'proposal,' anyway," Mei remarks.

And so, with a master swindler as his guide, the elite assassin Hikaru embarks on the most difficult mission of his life: Marriage Hunting. Their goal? The perfect marriage. The curtain rises on a world-class, hardcore "marriage-hunting" battle action story, featuring the ultimate buddy duo of an assassin and a con artist!

Spring 2026 Anime List

Source : Marriagetoxin Official