[Yamaguchi doesn't even notice the slip-up on his end, though it would probably just make him blush if he did.]

M-More or less. [Ah, that's the other thing. His own name...that's definitely a bad thing to let anyone hear if this place is actually hosting the Grand King.] Right, um—why don't you just call me Tadashi, Sakeguchi-san? Or, you could use something else. Not a lot of people use my family name...

[Blatant lies. "Tadashi" is just a much more common name, which won't be noticed.]