I got accused of bullying a few years ago, it was pretty crap but I got rightly cleared in the end. It was annoying as I was one of the only people that bothered to talk to the guy, and the he made a load of stuff up. The people investigating didn't even really understand it but obviously they had to go through with it.
I assumed I had no chance and that they'd side with the accuser for sure, but my one was done pretty fairly. It was a bit odd though as I was meant to defend myself in completely fictitious situations so I couldn't even really do a 'my side of the story'
They found some book he had in his desk drawer and he wrote a lot of odd stuff about people at work. He clearly had mental health issues so I don't really hold it against him but others did, he left pretty soon aftwr