The Glory

Both dramas are about girl that are from a poor background and them being bullied by a group of friends from the richer societies. Both leads get help from a male counterpart. The only difference is that Better days is solely about the effects of bullying and healing while The Glory is about the aftereffects of bullying and the lead getting her revenge.

Both dramas share the same title and are female-centric, featuring strong and intelligent protagonists. With revenge-driven plots at their core, both stories revolve around the main female leads using their wits and strength to navigate through challenges and seek justice

Both of the following are revenge stories that take place regarding events from high school. The only real difference is one is Adult vs High schoolers and the other is Adult vs Adult after high school

It has a similar premise except that the female lead is fighting against the one who killed her parents.

Revenge dramas with FLs. The FL from The Glory has a tragic past while the FL from Girl From Nowhere is implied to have one.
The FL from Girl From Nowhere is a high school student and a “demon” while the FL of The Glory is an elementary school teacher.
The FL from Girl From Nowhere (which has supernatural elements) gets revenge on those who do wrong while the FL of The Glory is getting revenge on her bullies from high school.

Because of the storyline. Also, the elements of the show is basically the same thing from "The Glory".

Badass female lead gets revenge punishing the bullies who treated her life like a joke plans and strategically takes them down one by one unraveling secrets on the way

A former victim of school violence plans and seeks revenge on her bullies after taking up a job as a homeroom teacher at the elementary school of the bully leader's child.[5] Some scenes are based on a true event in 2006 when a group of middle schoolers from Cheongju, South Korea, extorted money from their classmate for about a month, repeatedly beating and burning her using objects in the process.

Same personnality of the character FL
Same job ( professor )
same social class difference.
woman to woman revenge.

-both involve multiple years of planning revenge story
-both revenges are non violent
-both have an additional love plot

- Female leads bullied by their peers in school
- Revenge/thriller

The Glory - FL goes after her bullies.
The Yarns - Serial killer murders. All the victims are connected to the FL's past.

Part 2 as well. Main characters undergo terrible abuse and their bullies go on with their lives unscathed. So female leads take revenge into their own hands as revenge is a dish best served ice cold.

Both of these dramas center around an adult female lead who was mercilessly bullied to the extreme during school. Years later, seeing her bullies' success, she goes after her revenge.

The K-dramas “Flower of Evil” and “The Glory” share several thematic and contextual similarities:
Revenge and Justice: Both dramas center around the theme of revenge. In “Flower of Evil,” the protagonist’s dark past and hidden identity lead to a quest for truth and justice. Similarly, “The Glory” follows a woman seeking revenge against those who wronged her in the past.
Complex Characters: Both series feature deeply complex characters with intricate backstories. The protagonists in both dramas have endured significant trauma, which shapes their actions and motivations throughout the series.
Psychological Depth: Both dramas delve into the psychological aspects of their characters, exploring how their past traumas affect their present lives and relationships. This adds a layer of emotional depth to the storytelling.
Suspense and Mystery: Both “Flower of Evil” and “The Glory” are filled with suspense and mystery, keeping viewers engaged with unexpected twists and turns. The intricate plots and the gradual revelation of secrets make for a thrilling viewing experience.
Strong Female Leads: Both dramas feature strong female leads who play crucial roles in uncovering the truth and driving the narrative forward. Their determination and resilience are central to the storylines.

Both offer a mix of intense action, intricate plots, and compelling characters that fans of "Trigger" might appreciate.