Question because I am just now finding and reading this (so sorry if this has been asked before lol); what's Mitch's deal with Seto? What did the magic boi do if he did anything at all?
Mitch has just never trusted Seto. LK!Seto has always been a mysterious character in TC. A guy who deflects where he comes from and masks his insecurities with his studies. LK!Mitch is a type of character when he feels something is completely off with someone he gets defensive. Something about Seto just pissed him off and he doesn't know why. He feels because Seto is untrustworthy and prone to do something drastic (not like Mitch wouldn't either) but he always feels uneasy around Seto. They got along just fine at the start of TC but along the way something just got on his nerve with Seto and the tension between the two grew. They never had a moment where they could just sit down and talk it out, it alwasy results in outbursts. The consistent agitation Seto gets when he's around Mitch. Seto honestly has no idea what pissed him off so badly. Now that he has proof that Seto isn't who everyone thought he was. Mitch is using it as a gotcha and "I was right" moment.