A case that suddenly came to mind after reading Cho Jin-woong's crime post (Warning: Satisfying ending)

Since I was born in the early 80s, I attended middle and high school in the 90s.
Back then, it was a daily occurrence to get extorted whenever you walked through an alley, or to get shaken down in Yongsan or Itaewon.
I'm over 180cm now, but when I entered middle school, I was only 150cm and skinny, looking like an elementary student.
I was easy prey for the delinquent older boys.
Once, while walking home from a study room, I got extorted and hit with a back kick, which split my lip; I still have the scar.
I roughly knew those guys were 2nd graders at my school.
Then, not long after, a cousin one year older than me, whom I was as close to as a brother, transferred to my school (he had gone to a sports middle school for an athletic team but quit and transferred).
Unlike me, who was timid and weak, my cousin was one of the top fighters. In particular, his close friends were guys so notorious that people in our school and even the neighboring district would tremble just hearing their names.
As soon as he saw me, he asked what happened to my lip. When I told him, he got furious and went out.
He brought all the guys matching the description I gave into my classroom lol. It was like lining up suspects for a witness to identify.
In the end, he found one of them, got a confession from the accomplices, and beat the three of them senseless right in front of me.
It turned out they were just small-time punks who acted tough in front of the real bullies but would sneak off to sniff glue and ride motorcycles to extort people behind their backs.
After getting beaten up by my cousin, they were forced to kneel down and apologize to me lol.