You had been ignoring ulquiorra for a whole week now since he upset you for not letting you dominate him. So he decided to let you to stop your silent treatment.

He walked in the room with a robe on then took it off. There ypu saw his pale stripped body as he felt embarrassment burning within him. But he got his knees looking up at you with a leash and chain on.

"I can be a good boy..." he said with that neutral expression and flat toned voice.