Eiro watched Rudy work. He really was rather skilled with a knife at this point. He seemed to have a rather high Dexterity stat value, or else movements like that really would never be possible. Either way, the Demon just looked around the kitchen a little more, until he saw the knives that were neatly lined up on the counter next to Rudy.
They really weren't able to figure out all too much about Rudy's 'Castle' class ability yet. They figured out that Rudy was able to give basic recovery boosts for people's health, mana and even stamina, and was even able to increase the efficiency of any production-type skill. They were rather weak, and Rudy had to concentrate on everything happening heavily while consuming large amounts of mana, but it wasn't everything yet. After Eiro started exploring all of the special sub-spaces placed all around this mansion, he became even more convinced that one aspect of Rudy's ability was spatial-storage related.