He needs to liven up a little, especially when he uses a practiced form of verbal abuse...

( sounds like someone went through it one too many times, and actually enjoys it. perhaps subaru can become a masochist with him, it's a lovely feeling knowing pain can be much more from a loved on. )

My tastes are... difficult, and there's no need to cater to them. I'm fond of both eggs and toast.

( maybe he is on the plain side, but he can offer this at least. ) My palate comes and goes on certain dishes, you can say it's unique.