Weak Hero Class 1

Both have a smart student that that reinvents themself into a fighter.
Both are about groups of male friends that find themselves getting into fights. Not exactly the same situation, but they have some similar vibes.

Both are action packed stories with focus on friendship instead of romance.
Weak hero is more focused on relationships and emotions, while maintaining great story telling and action bits while Black Knight focuses more on the main story and the main conflict. Black Knight doesn't develop the characters as much but there's still sense of comraderie and the general feeling of vindication is the same

The chemistry between Si-eun and Su-ho reminds me a lot about PatPran...
Both have that amazing sizzling hot chemistry...
The tease fun friendship that will turn more later...
It will give the vibe of Si-eun and Su-ho in an alternate universe
The story, acting, chemistry, writing, directing of Bad Buddy is perfect so definitely worth a try

Somehow the first few episodes of Viral Hit reminded me of Weak Hero. Bullies and fighting them. The main leads are pretty similar visually speaking. They have a cute innocent faces. In Viral hit, there is an aspect of livestreaming and getting profit from it.

Pretty similar vibes and themes such as
-extreme school bullying
-spoiled rich kids
-influencial parent cover ups child's wrongdoing
-insecured teens

They are both set in high school and school fights are involved. The cover photo is also very similiar and it actor that acts in both dramas.

youth and yearning. both series demonstrated a youth focused drama where the characters establish a bond, then yearn for their respective "partners" longer than they've even known them. violence too, somewhat? gangsters were present too. also, when watching, youll totally get the same vibe of agony from weak hero to four hands, it's crazy.

It's not bullying here, but same dark high school vibes.
the girl supplies drugs, and other kids are in this loop they can't get out of and fight for normal lives.

Undercover High school drama is a good drama which has a similar vibe of Weak Hero Class 1.
It focuses on mystery, friendship, school bullying.

Just watch the trailer thats enough to convince you why it should be a recommendation if you liked Weak Hero Class 1.
Its a high school violence bullying revenge story

Itaewon Class has everything and more , you probably watched it alreaady but its time to rewatch it :)

Ayumu passes an entrance exam of a high school with help of Yuko, her best friend, but Yuko fails and blames Ayumu for her failure. Broken heart from the broken friendship, Ayumu shuts her up and gives up making new friends in high school. But Manami, the most popular girl in her class, is more than happy to accept her as her friend, so she starts to enjoy her new life. But when Manami misunderstands that Ayumu is trying to steal her boyfriend, her insidious bullying to Ayumu begins. With nobody to turn to as her mother concerns more about her weak brother, and her teacher has her own problem, she is pushed to the limit of losing herself. (Source: AsianWiki)

- School Bullying
- Attempted Murder
- Sismance (brothermance in Weak Hero Class)

- A quiet/weak kid getting bullied in school
- They both form a friendship that helps them to become stronger and with that fight for their revenge
- Also they both use a pen ?

Although they differ greatly in genre and plot, they both have similarities:

- Both feature the developing friendship between two high school boys, and how they go from strangers to inseparable

- In both, one of the boys is stoic, strong and lazy in their studies while the other is very studious, intelligent and physically weaker. The dynamics of their friendship are similar, where they take time to warm up to each other, with circumstance pushing them closer.

- Both feature bouts of hand-to-hand combat, though WHC is a lot more violent and has way more fights than ONHCT, which is more of a supernatural genre.

- Both have emotional plots!!

- Both end in a similar way :(

Both feature:
- Boys with nuanced, ambiguous feelings for each other, ranging from protectiveness to hate.
- Plenty of fighting, especially in the classroom and on the roof.
- School bullying and standing up to bullies
- A physically weak protagonist who manipulates situations for his benefit