The spring 2026 anime season has a lot of fantasy and isekai shows, but there’s still plenty for shonen fans too. One of the most anticipated upcoming series is Marriagetoxin, a popular manga with a captivating story. It follows a charming hitman who teams up with a matchmaker to find true love.
Marriagetoxin offers a fresh and unusual story, especially for fans of the shonen genre. The original source material is already popular, meaning the anime adaptation is likely to have a strong and supportive fanbase from the start. Get ready to meet the intriguing characters Hikaru Gero, a specialist in poisons, and Mei Kinosaki, a master of deceptive marriages, when the anime premieres this spring!
Marriagetoxin Unites a Hitman and a Marriage Swindler
Meet Hikaru Gero and Mei Kinosaki
Anime aimed at young boys (known as “shonen”) often features characters who work as assassins. With the recent introduction of Sakamoto Taro in Sakamoto Days, another professional killer is joining the ranks: Hikaru Gero. He’ll be the focus of the upcoming anime adaptation of the manga MarriageToxin, establishing him as the newest hitman in the shonen world.
Hikaru Gero is a unique assassin who prefers using poisons to defeat and eliminate his targets. As the current head of the infamous Poison Clan – a family known for their mastery of deadly toxins – Gero has no desire to marry or produce an heir. This presents a significant issue for the clan’s current leader.
Mei Kinosaki is a con artist who pretends to fall in love with people to get money. He does this not only to pay off his own debts, but also to help cover his brother’s medical bills. Although Mei and Gero have never met, their lives are about to cross in a surprising way. This is how the story of Marriagetoxin starts – with a chance encounter between Hikaru and Mei.
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Hikaru Gero Wants to Get Married in Marriagetoxin
Mei Initiates Project Prince for Gero
Hikaru Gero never intended to have a child to continue the Poison Clan’s legacy. He couldn’t picture himself in a relationship or getting married, as his life was dedicated solely to assassination. Because he was raised within the deadly practices of the Poison Clan from a young age, he missed out on a normal childhood, including school and friendships.
Initially cynical about love, Gero began to reconsider after his sister had a child for him. Conversations with his close friend and fellow hitman, Toshiki Hanamaki, further shifted his perspective. Seeing Toshiki find love made Gero believe he might also be capable of a relationship. This newfound hope motivated him to search for someone who would accept him as he is.
I can teach you how to lure in anyone, men, women, whoever.—Mei Kinosaki to Gero
Meet Mei Kinosaki, a charming con artist who owes a debt to Gero. To repay him for saving his life, Mei promises to help Gero with his love life, offering his full support. He’s determined to guide Gero – setting him up on dates, teaching him how to socialize, and navigating the complexities of relationships. But their efforts are complicated by dangerous enemies who want to see them fail.
Bonesfilm Brings Marriagetoxin to Life
The popular manga Marriagetoxin is getting an anime adaptation, and it will be produced by the well-known studio Bonesfilm. Bonesfilm has a long history of creating hit anime series, including titles like Gachiakuta, My Hero Academia FINAL SEASON, and My Hero Academia: Vigilantes.
Fans can look forward to a beautifully animated and action-packed first season of Marriagetoxin. Bonesfilm, a highly respected studio, is known for its dynamic fight scenes, and they’re sure to deliver an impressive experience.
Marriagetoxin Episode 1 Is Scheduled for April 7, 2026 Release
Crunchyroll to Premiere Marriagetoxin Episode 1
I’m so excited to share that the first episode of Marriagetoxin is officially set to premiere on April 7, 2026, globally! While we don’t know the total episode count just yet, it’s looking like we can expect around 11 to 13 episodes airing from April through June 2026. I can’t wait!
Crunchyroll will be streaming the anime Marriagetoxin, with the first episode available on April 7, 2026. While the exact time it will be released hasn’t been announced yet, Crunchyroll has confirmed that an English dub will be available. The anime will be available in most countries, so check Crunchyroll to see if it’s available where you live.
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2026-03-26 23:36