If action is your default lane, Marriagetoxin is the season's pickup. Bones Film ships April 7, 2026, ongoing run, and the casting decisions alone have the source's fanbase paying attention.
Where it lives
For centuries, the Poison Masters have perfected the art of assassination. Among them, the Gero family stands as one of the five most powerful families of Masters, wielding unmatched skill and influence. Hikaru Gero, heir to this infamous bloodline, has lived his life deep in the shadows of the underworld, far removed from love or marriage. However, to ensure the Poison Master bloodline does not die out, the head of the Gero family declares that Hikaru's sister will be forced to bear an heir. Soon after, Hikaru crosses paths with Mei Kinosaki, a brilliant marriage swindler who also happens to be his current assassination target. What sells it isn't the premise. It's that the team understands the source's tone — restrained where most adaptations would underline, loud where the source itself goes loud.
Production notes
The team is Bones Film (committee: Bones, Dentsu, Lantis), and the choice matters: their last few shows have been the ones critics quietly recommend after they're done public-rating the loud titles.
Calendar slot
Tuesdays at 23:00 (JST). Ongoing run, episode count TBC. Same-day simulcast windows are on the usual Western streamers — check your local Crunchyroll, HIDIVE, or Hulu listing for the timed slot.
The case for it
7.56 from 12,628 early scores on MAL — useful context when the season hits saturation and watchlist trims become inevitable. Audience holding past week one usually means the source's emotional anchors are landing. Give it three episodes. If the third doesn't lock you in, drop it without guilt — but I'd bet money it does.