If Jyushimatsu ever got possessed, it would have to be by a very strong, malicious spirit. Jyushimatsu’s resilience is very strong, after all.
Jyushimatsu, being of strong mind and body, would force himself into a lockdown as he battled for control with the spirit. It’d all be mental so no one else can actually tell what’s going on www
The stronger the spirit, the longer it takes for Jyushimatsu to overcome it. In the meantime, his brothers try to help him out the best they can (watching over him, making sure he doesn’t move, restraining him if necessary, etc.)
The vending machine incident involved soul-sucking and Jyushi being thrown into hyperspace but that’s another story.
Since Jyushimatsu is the most knowledgeable about fending off spirits, his brothers can’t really do much except try textbook procedures. Their added help in addition to Jyushimatsu’s natural resilience often get rid of all spirits.
cosmic-fantasizer asked: ((I sent an ask on anon but idk if you got it so now im sending it again)) Ok, so feelsy(?) idea. Totty's usually someone who pretends he has no brothers/he doesn't know them when he's in public. So what if he got into an accident and needed to be hospitalized, and the first thing he says when he wakes up and sees them is a genuinely confused "Who are you?" ((I'm sorry if I'm bothering you by sending all these asks ^^;))