4th WALL BREAKING: Please don't.
THREADJACKING: Feel free!
BACK THREADING: Perfectly fine. ♥
MIND READING: Sure.
LOCATION SENSING: Sure...?
TELEPATHY: Suuure, I'd rather you didn't, though.
SPECIAL/MAGICAL ITEMS: Maybe?
FIGHTING CAPABILITIES: Ritsuka doesn't fight. If he had to, he might throw a punch or two, but that's absolutely have to. Otherwise, I think he'd try to run away/ask for someone to help him escape/etc.
INJURY/DEATH: Ask me first? I probably won't care, but I'd like to know..
WIN/LOSE/TIE: Guess it depends on who he's up against.
MEDICAL/PHYSICAL INFO: He takes injuries pretty easily/is used to them.
ROMANCE/RELATIONSHIPS: Hahahahahaha, no. Ritsuka likes when people he's friendly with invite him on "dates" but he's not really...serious about it.
SEXUAL RELATIONS: No. Just no.
PHYSICAL CONTACT: Depends on how much? Little things are okay.
ANY TRIGGERS/SECRETS/FACTS YOU WANT PEOPLE TO KNOW ABOUT: He doesn't react well to non-platonic love, saying something bad about Seimei (this just depends on what it is, though), and mentioning him having a "split" personality of some sort. HOWEVER, you're free to do any of these. He'll just react badly.