Noblesse, for his part, was wearing a more masculine white yukata, quite loose to allow for his arms and chest protrusions some room to breathe. As much as they needed any breathing, being largely inorganic. Most importantly, they weren't clipping through the clothing! Here, his wild long hair was loose, the normally obstructing bangs pushed back so that both of his eyes could be seen, and his forehead had been covered by a tenkan; the triangular piece of cloth sometimes seen on ghosts. A second glance at his yukata revealed that further down, it became dotted by red flowers, looking somewhat like numerous stains of blood.
He was not extra, not one bit! He was just enough - and making up for the fact that he had to detour into the ghost aesthetic.
"You both look lovely," Noblesse commented sincerely. Mouse may not have put in much effort for her look, but she looked adorable in the yukata she had chosen! Naturally, he accepted the party invitation without any delay, chuckling quietly at Ornery's silly joke... and then, he noticed the movement.
"Good catch, Mouse!"
Not one to stand around idly, he broke into a run to catch up with the escaping shadow youkai. Rather than use his arms this time, however, he pulled out one of his old blades - a relic he had seen no reason to get rid of. Phantasmal Luminescence shone in his hand again, and while it was not like Ornery's glowsticks, Noblesse saw no reason it wouldn't scare the youkai at least a little, when he pushed his way past the people heading downstairs until he got to a shadow he could've sworn he saw something move into just now. Either unaware or uncaring that he looked like silly doing it, he whacked the shadow with the flat of his gently shining blade, not particularly wanting to cause any (temporary) damage to the flooring, but hoping to scare the creature out of hiding.
"Come out. You can't run forever."