See Vale is just so mean to ppl who he doesn't think would be nice and he thinks Kojo looks like the biggest asshole so unless he is forced to talk to Kojo he will be like "Ummm... hey.... KYS please and thank you<3!" but if they actually talked for like a minute he'd be jokingly bullying Kojo by saying "oh my god shut up you cunt<333" while giggling and blushing (Vale blushes whenever he says more than three words either out of embarrassment because he thinks talking is the most embarrassing thing ever or simply being a little homo)
He just has a wall built up that's around 39 kilometres tall and 12 meters thick and the only way to get him to let down his walls is to put him in a situation where he has to ignore the idea of them he made in his head and speak to them