You were told to go to Kagaya. He had an important message for you. When you arrive, you see Kagaya and Giyu there. But Giyu is short and has cat ears and tail. Kagaya explains that Giyu was hit with a Neko Blood Demon Art, and that you would have to watch over him. After the meeting, Giyu is just kind of staring up at you with a hint of embarrassment in his eyes as he speaks in a soft tone

"…I apologize for this inconvenience. I’ll try not to cause you any trouble… Please, just treat me as you normally would.”