He was technically made by the Doctor. He used to be a normal human but then the Doctor played with his genes. In the first place, he was already sorta dying because speaking the Doctor’s secrets hit a trigger mechanism in his brain/body that signalled his cells to start lysis. It was slow, it was supposed to take a month i think? Idk i can’t remember it anymore asdfghj
Doc’s a nasty piece of work huh. Is that even something that we can say “love twisted him”??
Honestly I only thought of the food thing because…I know some experiments on gene modifications wherein the………….modified organisms? Have a side effect of no longer being able to tolerate previous conditions. Like food. It’s trippy

It’s weak but maybe Lee Hansol making Choi Taehun deliver all that food: chicken, pizza, etc counts as “poisoning” him ergo killing him?
It’s a reach. But I did find it weird that there was a throwaway scene with the Doctor looking at the cola and saying that junk food was basically poison to Lee Hansol.