Sin piedad para nadie

I think I've finally found my new all-time favorite thriller. The action is non-stop, and there are so many crazy twists that it keeps you on the edge of your seat the whole time.

Mercy for None is definitely an action-packed thrill ride. If you like bloody, brutal fights, you'll love this show. It's not for the faint of heart, for sure, but I couldn't take my eyes off of my screen for a second. It's one of those shows where the plot unfolds gradually, but there are enough hints and clues to keep you guessing. The pacing is so perfect. There are plenty of tense moments, and lots of quick cuts, but the show never feels too hectic.

The fight choreography is absolutely incredible. I never thought anything could top the martial arts in John Wick, but I was seriously impressed with the fight scenes in Mercy for None. Every single one of the fights felt believable and realistic, and the stunts and visual effects were perfect. I also like that they put a ton of creativity into the fights, and the action sequences are designed to blend into the narrative really well, so they don't feel completely out of place.

Plus, it's fun to watch So Ji-Sub kicking butt and looking so dapper while doing it. He's been in some other action flicks, so I already knew he could act, but I wasn't expecting his performance in this one to be on another level. He delivers the lines convincingly and never misses a beat, and the fight scenes are so detailed.

I thought Mercy for None was a bit of an odd choice to cast So Ji-Sub. He plays a former gangster, which isn't exactly a typical character for him, and yet he does it perfectly.

I really loved non nonsense show, the action genere is clean cut, without any distributed slope, its simple ruthless honest as it progress, its definitely a Korean John kick series. For a simple continuous watch, which keeps viewer interested in complete one go watch, cinematography choreography of action sense is flawless there is no doubt this is one of the best action series of 2025, a simple known revenge story which gets better with each episode. With satisfying ending, there is no way to ignore the master action piece like this, its good action for limited series. With good story and well based acting.

From brutal hand-to-hand combat to wielding his signature baseball bat and mastering blade fights, Bones crack, bodies fly, and blood stains the walls of many villains' hideaways. So Ji Sub delivers an electrifying performance that sets a new standard for action storytelling.

Mercy for None lands its blood-soaked action sequences and sufficiently surprising plotting to stay engaging.

-The series maintains the high-energy melee flair that the best South Korean thrillers have, with stellar fight choreography.

-The duration of the episodes was good, each of which is between 30-40 mins long, which I found super refreshing. It doesn't make you bored.

-In conclusion, this show is only for fans of action and bloody violence.

Mercy for None hooks with its gritty vibe and relentless pacing. The noir tone and emotional weight make the brutal, lived-in world feel urgent and real. While some early subplots are muddled, the narrative gains clarity and impact as it unfolds.

So Ji-sub shines in a magnetic return, embodying Nam Gi-jun with raw rage and quiet grief. His physical intensity and emotional depth define the series, making his comeback unforgettable.

The lack of a female lead fits the hyper-masculine, gangland setting, where vulnerability is danger. It's a bold, thematic choice.

Stylish, visceral, and tight; this is Korean action noir at its boldest.

I really enjoyed this show. I appreciate how succinct it told the story, nothing was dragged out. It has phenomenal fighting and interesting/new (to me) camera work. The only reason why I don't give it a 10 is because I liked other shows a tad bit more. Specifically: "Bloodhounds" and "Worst of Evil".

Both shows also have amazing fighting, but Bloodhounds and Worst of Evil have more fleshed-out stories (even if Bloodhounds retcon'd near the end due to a scandal involving one of its actors). Mercy For None's storytelling cuts out just a little bit too much, enough so that I was wishing I cared more about the main character.

Nevertheless, it's an exciting show. Totally still worth the time. Highly recommend.