Lucky here. Here’s a thought: Any/all sides noticing each other stim before any of them have disclosed their autism or ADHD and just thinking... "I’m not alone".
Remus teething on his sleeves and Roman, who is half holding back his flappy hand stimming, noticing and almost crying because, even after so many years apart, he and his brother still have something to connect them.
Patton noticing Virgil bounce-bounce-bouncing his leg or picking his nails and Patton openly begins scent stimming in front of him because he knows Virgil won’t judge him because he knows he isn’t alone.
Logan noticing that Deceit’s lisp isn’t just a lisp but also sound stimming and he and Deceit hang out more until Deceit realizes Logan’s space fixation is actually stimming because it looks pretty.
