I'm here if you need someone to talk to, you shouldn't keep these emotions bottled up.
From what I understand Rudy's condition is "Agoraphobia", it shouldn't go away easily, or at the very least he shouldn't be so good at socializing.
I had the same issue with Subaru from Re:Zero at first, they introduced him as a "NEET" but he's far from it, a complete extrovert. I'm willing to overlook this one though because someone told me he wasn't a NEET in the light novel, the anime unnecessarily added that because it's an Isekai, seems like they forgot it's not an escapist fantasy, unless it was made for masochists 😂
Yeah I watched A Silent Voice, it's pretty good! One of the rare cases of bullying in anime where the parents are in the picture. I didn't pay much attention to the visual details though since I was drawing while watching 😅 maybe I should rewatch it someday.