Why did Jiheon has to be such a sociopath and betray his childhood best friend like that ....

Why did Jiheon has to be such a sociopath and betray his childhood best friend like that .

I hope there a twist in the pills being switched and poor Wooju didn't present without his consent ,

And he is starting to ask questions and find things odd ,which a good change from the guy who blindly trusted everyone ,i sincerely hope he connects the dot so Jiheon can pay for what he did ,and so that fucking psychopath of a professor