The bullying in general. Also particularly the classroom and hallway scene (I call it destroy-scene) when something snapped for the quit and normally sober Yeon Shi Eun after the heavy assault on his new larger than life, best friend Ahn Soo Ho. It's emotionally driven violence, not exactly like calculated revenge but more like despair, helplessness and utter rage because of all that happened to Soo Ho, to himself and maybe also the tragedy and corruption of Oh Beom Seok. It is somewhat similar to the triangle relationship between Yong Joo, Gi Woong and Gi Taek in the Korean movie Night Flight (2014). In Night Flight the classroom and hallway scene is driven by the same emotions but in this case the 'fighter' student destroys the whole classroom, hallway (and also teachers) for his soft hearted childhood best friend who just got assaulted in a very cruel manner. Their former friend Gi Taek, who was himself bullied and then corrupted under pressure, was the instigator of the assault on Yong Joo just like Oh Beom Seok was the instigator in Weak Hero Class 1. But in the 2014 movie the theme is centered around being a gay student in the Korean schoolsystem/boys school (where all this bullying already is happening to the weakest, it must be terrifying) In Weak Hero Class 1 we are kept in the dark about the sexuality of the boys, though there is reason to belief the same also applies in this 2022 Korean drama. Thanks for reading. Both are a gem!

Both movies are based on real life stories about Chinese parents and their abducted children. Both abductions have to do with child trafficking, which is a major problem in China. In both of these movies parents are portrayed that in the movie are still searching for their child but in real life have finally found their son back after years of searching!