Indict him for what? What specific charge?
Trespassing? That's a misdemeanor in the US, the Police won't even arrest you for it. Besides, it's not trespassing when you have a standing invite from a resident.
Arson? MC didn't commit arson, Derek did. Any proof? nope! Judge would dismiss it out of hand.
Battery? Maybe, if your MC punched Tybalt. If not, there's no charge. Oh, and if your MC did throw a punch, Tybalt is the one who initiated contact.
A civil action you say? Even with a much lower burden of proof there must be some proof, according to some of my friends who are lawyers any of the above cases would be dismissed out of hand. My one friend who practices civil law told me that one of the most annoying parts of his job is talking clients out of frivolous lawsuits like these. Lawyers do that because it's a waste of their and their clients time and also because bringing such suits reflects badly upon the reputation of the lawyer.
Off the top of my head (and ignoring optional ones like assault and battery or their earlier actions).
Burglary: The MC and Derek unlawfully entered the mansion with intent to commit a crime (arson, theft, vandalism, take your pick).
Arson: They didn't actually do this one, but Tybalt only needs to convince people they were trying to. Derek was asking for a lighter, after all.
Theft: They did steal their suits. Derek even kept some of his. It's entirely possible those things were expensive.
Vandalism: The big one. They actually did this and the problem is that the cost of the repairs is going to be through the roof. That makes it easier to claim it's a felony.
Again, Tybalt only needs enough evidence that a jury is needed to sort it out. I think that's a plausible bar in this case. The MC and Derek are not exactly the Moriarty of college crime.