Blaze was on Siegfried's back when they entered the apartment.
Tonight, Chae had a party. Previously, she had said that she would hold a farewell party for Blaze. He's having a small reception party because he won't be able to attend his sister's wedding. That's why Benice and Xander were also present.
Oh, tonight was the first time Siegfried met Xander and introduced himself as Blaze's lover. It was a little awkward, but as the night went on, they could get used to it. Xander also didn't seem to mind when he showed some affection for Blaze – in contrast to Cameron, who used words of ridicule to just tease them.