Haruki Ishiya
Hikaru Gero (voice)
Series SeasonSeason 1 episodes2026
Marriage Toxin
Season 1
No season overview available.
Episodes
Each episode has its own detail page.
Episode 124 min2026-04-07
The Poison Master's Search for a Bride
An assassin must marry to appease his clan and save his sister. Small problem: He doesn't know how to date.
Episode 224 min2026-04-14
What Is "Charm," Anyway?
Kinosaki takes Gero to practice dating in a floating art museum that becomes the scene of a heist.
Episode 324 min2026-04-21
My First
Gero fights a Water Master to rescue Himekawa, but his real challenge is taking her on a date afterward.
Episode 424 min2026-04-28
The Sound Master
Gero goes undercover as a student to guard a corporate heiress, but he isn't the only Master on campus.
Episode 524 min2026-05-05
Lord Chladni
A test of courage seems like a romantic opportunity, but it turns out to be a deadly trap.
Episode 624 min2026-05-12
Together With Me
Panicked students try to sacrifice Ureshino, and stopping Naruko is the only way to make them see reason.
Episode 724 min2026-05-19
The Bug Master's Wedding
Gero goes to see his friend get married, only to run into some particularly unwelcome wedding crashers.
Episode 824 min2026-05-26
The Hitman Hunter
Gero takes a job to protect a fellow Master from a man who can go toe-to-toe with the expert assassins.
Episode 924 min2026-06-02
The Animal Kingdom
No episode overview available.
Episode 1024 min2026-06-09
Episode 10
No episode overview available.
Episode 1124 min2026-06-16
Episode 11
No episode overview available.
Episode 1224 min2026-06-23
Episode 12
No episode overview available.
Episode 1324 min2026-06-30
Episode 13
No episode overview available.