Comment by Cutie Jessie on Beyond Memories - Chapter 34

@Cutie Jessie you answered your question yourself. Who in their right mind would do that, because sejin was not in his right mind back then. Sejin has nightmares about being raped by strangers, remember?

@Four eyes nooo
If you scared of fire do you go near fire places, no you don't 
He dreams of horrible things and then decides to follow the first person that makes him feel uncomfortable like that

@Cutie Jessie and what if you lack sleeping at night?  So often so that you can't even tell dreams from reality that if you see yourself burning inside a house every night in dreams when one day it might happen in real life and you think to yourself that it’s one of those nightmares that you will eventually wake up from? I think sejin goes through smt like this as he tells his memories are quite vivid.

@Cutie Jessie i think he worry that if he didn't follow him,he makes chaos and sejin will embarass his family and himself,as we all know kwon family is powerful,so he choose to follow him hoping he didn't do anything to him as there is a lot of people around

@Four eyes in a normal case scenario you'd still try to escape the fire even if it's a reoccurring thing..