Mantis

KILLERS, CHEMISTRY & REGRETS: THE REAL-LIFE DRAMA BEHIND NETFLIX’S MANTIS (2025)

latestnetflix.com's view is that Assassins on screen, aching muscles off screen, and a fandom convinced the leads should be kissing instead of killing—welcome to the messy, bloody, low-key chaotic world behind Mantis.

On-Set Drama & Production Tea

“If only we had more time…” – the stunt regret heard ’round K-drama Twitter.

Yim Si-wan has openly admitted he regrets not doing some of Mantis’s wild acrobatics without wires. He revealed there was a big stunt sequence where he wanted to go full Tom Cruise, but a tight schedule and limited prep forced him to rely on wire work instead: “I tried to do it acrobatically without wires… but it was impossible in such a short time… That’s what I regret the most.”

• Translation: the assassins weren’t the only ones under pressure—so was the schedule.

Was the movie rushed together? Fans think so.

A longform review notes that Mantis feels “messy” and “convoluted,” with too many time jumps and info-dumps, and suggests the whole thing may have been rushed in writing and production—with the spicy speculation that “maybe it was too rushed in terms of writing and production, or all of the budget was blown on getting such an incredible cast together.”

• Unconfirmed, but fans have absolutely run with the “all the money went to the cast” theory.

Mixed reactions that even the star acknowledges.

In coverage of his post-release reflections, Yim Si-wan acknowledged the mixed audience reaction, admitting there was room for improvement and wishing he’d had more time to prepare the action and emotional beats. That’s as close to “yeah, we know it’s flawed” as you’ll ever get from a promo tour.

Romance Rumors & Chemistry Hysteria

The fandom: “Let them kiss.” Netflix: “Corporate says no.”

On social media, fans have gone feral over Han-ul and Jae-yi’s tension. A viral Netflix clip of their rooftop fight had commenters begging for them to “just kiss and make up (emphasis on kiss)”. TikTok edits and Instagram reels frame the film as basically a tragic situationship with knives.

Press-tour teasing, zero confirmation.

At promo events and press coverage, the pair leaned into their chemistry—laughing together, exchanging comfortable banter, and gamely accepting titles like “slow burn” and “unresolved romantic tension” in fan edits. But any off-screen dating talk remains unconfirmed rumor; publicly they keep it professional and strictly co-star coded.

Netflix knew exactly what it was doing.

Both actors had already been riding the Squid Game wave, and coverage pointed out this reunion as a selling point for Mantis. Fans speculate the streamer banked on their existing popularity and ship potential to carry a riskier, bloodier spinoff.

Scandals, Backlash & Fandom Rage

“No chemistry, no depth”: Reddit goes for the jugular.

While marketing hyped an emotionally loaded assassin bromance/romance, a loud corner of Reddit shredded the final product:

• One popular post calls the characters “really shallow and poorly written” and flatly declares “there is no chemistry between Mantis and Jae-yi” on screen. - Fans complain the film talks a big game about “complex relationships in a violent industry” but delivers mostly exposition and not enough actual drama.

Action movie with not enough action? Fans say yes.

Facebook and forum reviews slam the movie for weak, sparse action scenes and some dodgy CGI that undercut its martial-arts pedigree. Combined with the “rushed script” accusations, this has created an ongoing fan narrative that Mantis is a brilliant concept kneecapped by a stressed-out production.

Origin Stories & Killer Trivia

The “Mantis” role almost started as a throwaway cameo.

At a press conference, Yim Si-wan revealed that during Kill Boksoon, there was originally a script mention of a mysterious killer called “Mantis,” and the director briefly considered him for a voice cameo. The cameo never happened—but the name stuck, and when Netflix spun the world off, he became the Mantis. - He called it “destiny,” saying he felt fated to end up in the role and braced himself for the hardship of all those action scenes.

He trained like a man possessed—for dual sickles.

Si-wan had zero prior experience with fighting using two sickles, but the character’s signature look is twin blades reminiscent of a praying mantis. He reportedly moved into action school, training nonstop to get comfortable with the dual-weapon style before shooting.

Three killers, one showdown, mixed reviews.

The crew hyped the climactic 1:1:1 fight between Han-ul, Jae-yi and Dok-go as a set piece meant to blend “sharp emotional confrontation” with brutal choreography. Critics and fans, however, have complained about editing and pacing blunting the impact.

Fandom Theories & What-Ifs

The missing emotional cut.

Because so many viewers feel the movie is chopped up with time jumps and exposition scenes, a recurring fan theory is that there’s a “lost” or more emotional cut of Mantis sitting in Netflix’s vault—one with deeper character development and clearer romantic subtext. This is pure speculation, but it’s become a popular coping mechanism in threads that mourn “what this could have been.”

Was Mantis sacrificed for the universe?

On forums, some fans argue the film is “too connected to Kill Boksoon,” saying it spends more time serving the franchise and less time serving its own story. The gossip-y spin? Rumor has it Netflix prioritized building the “assassin universe” brand over letting Mantis stand on its own as a tight, focused thriller.

Love it or hate-watch it, Mantis has given us everything a modern fandom needs: dangerous wire fantasies, rushed-script conspiracies, ship wars, and an actor who literally wishes he’d had more time to throw himself off things. In other words—premium gossip fuel.