He nods at the new Dragon arriving "Konnichiwa, Aruga-san" He looks back to Nagahide "Niwa-san, this is Takahashi Aruga, one of our Hatamoto and a good friend" He then looks at Aruga "Aruga, this is Niwa Nagahide" A maid comes to their table and cleans up what Yuki left on the table. Kohaku asks her to bring some sake and she leaves with a nod
Now he returns his attention to Nagahide again "What you say is right, Yuki-sama is my little sister. We share the same blood" He has a proud smile on his face. The maid returns with a bottle of sake and cups on a tray and puts them onto the table "Arigatou" He says to the maid. She bows and leaves quickly again. He takes the bottle and holds it up a bit "Would you like some?" He asks both Nagahide and Aruga befor he even thinks about pouring some for himself