It was rather from the nose. Lu was bleeding from his nose!
Yano didn't want to follow up after his 'Oh' and Lu didn't pay him much attention. He turned around and searched for something until he finally found the small fridge and held a cooling pack to his nose.
Lu and Yano just stared at each other.
"Doesn't it heal?" Yano thought he had a wound.
Lu just shook his head, "It's from stress, not physical," he added as Yano didn't quite catch on.
"Oh," Yano said, he really wanted to tease Lu but thought he suffered enough from Holn.
Also, he actually spoke! Yano was even more surprised, his voice was pleasant to hear. He should talk more.
"Do you need help?" Yano sincerely wanted to get closer to Lu and reassured him he shouldn't let Holn bring him down.
Lu shook his head. There was another awkward pause between them.
"I'm not used to so much exercise... like you."