Small note that he specifically used the clinical word for 'anxiety' (不安症) here, not just the word 'anxious' (不安). I'm not sure if it's used as loosely in Japan as it is here but I thought it was worth mentioning.
Also, since some people didn't seem to get it, yukiyuki's reply that I put in the comments of the previous chapter was a joke, it's just his sense of humour. I'm used to it so I forgot that you guys don't see many of his replies or tweets, but most of his replies are like that.