The author is clearly a troper. He's displayed several literal tropes throughout the series. Kim Hoe Pae is shown literally engaged in Pet the Dog with Hoon, the terrier. Dal Dal's father delivered a literal Curb-Stomp Battle in chapter 240. One of Dal Dal's kicks invoked a The Glasses Come Off event with Jeff. Jae Gu's been made a janitor at one point. Last but not least has Jae Gu's two siblings literally Put on a Bus. This is by no means an exhaustive list as several other well-known tropes are scattered through the story.
Lampshaded early in the story. Does Han Gyul really need to kill somebody before he suffers any kind of real punishment? That's his stated benchmark of right and wrong. Even after Queen's lawyer filed a formal complaint with Goo Rah, highlighted with Moon Young's photographic evidence showing him, and his gang committing several violent felonies (not to mention his long, and well known track-record of delinquency), he's still a student in good standing, and being trained in martial arts. While Queen's extra-curricular activities can be handwaved by the fact that she has very competent (and expensive) legal counsel, just what kind of Karma Houdini Warranty does Han Gyul have?
Chapter 244 and 245, three middle school bullies try to chase off Jae Gu from his assigned duty of escorting a young child home so they can bully her. As noted by Moon Young, who signed him up, and Dal Dal, this program has been going on for years, and he's effectively a de-facto deputized police officer, yet none of them nor the guy who they recruit to drop kick him in chapter 245 recognize the uniform, the badge, or the program, and think he's just "playing starwars" and their obvious threats towards his charge don't concern him.
Jae Gu immediately recognizing a Wounded Gazelle Gambit, and taking the most practical (if not intuitive) action in chapter 190 against the smoking Bitch in Sheep's Clothing was hillarious, however, it begs the question, how could Jae Gu immediately spot a Wounded Gazelle Gambit like that? She's obviously had plenty of practice. So how did Jae Gu know how to deal with it? Especially as he was on his way home from work tired, distracted with thoughts of Queen and Dal Dal, and still has to prepare his small siblings (and himself) for the next day. Perhaps there's a reason other than his mother's abandonment for his initial Does Not Like Women attitude?
Jae Gu and his 5-year-old siblings live in that house alone. When Jae Gu got home, Jonathan's "garbage" gang, including Jeff were there waiting for him, at the gate. What happened to those children?
Dal Dal's arc starting in chapter 230. She's drugged (gassed to be precise), unconscious for an extended period of time, tied to a chair, for near 24-hrs, her legs are unbound, in a way that makes lowering her pants and undergarments easy, during the entire ordeal, by deranged "fans" who completely refuse, even when told, to acknowledge that taking their object of affection against her will, and holding her captive is wrong, not to mention threatening her with violence when she tries to pull away from having objects thrust into her face (after the last time that an object was shoved into her face contained some kind of powerful sedative). Further, these people have great difficulty understanding why it's wrong to remove articles of her clothing (starting with her tiger clip-ons, which, for reference, the last time they were removed was the direct result of a completely unprovoked No-Holds-Barred Beatdown), all of whom want Dal Dal to find them sexually attractive.
Chapter 244 finally explains why the police never bother to patrol the neighborhood where Wild's High is located and Jae Gu lives. The Korean police department in that particular city is so grossly understaffed that they can't monitor that area on a regular basis, and routinely count on Wild's High students and staff to be their surrogates, using the high-school's (if not nation's) mandatory "volunteer" program as justification. This, in turn, brings up all sorts of Fridge Logic on why none of the previous antagonists knew anything about how profoundly dangerous it is to antagonize Wild's High, or especially why Officer Park was so non-challant concerning the kidnapping of one of their best and most popular agents.
