>>80151665>>80152178It's not something that just goes away easily. It might take years and years of frequent, close time spent together before you allow yourself to truly let your guard down and act natural with someone, and if you stop you might very well regress. For Gura, it seems her level of collaboration and interaction in Hololive simply isn't enough to get over that hurdle in most cases.
Each such relationship needs to be nurtured individually as well, so you can't really generalize it to Hololive as whole either. She might benefit from cognitive behavioral therapy.