Those two words shock Nanami for a moment. His heart racing, and he runs over the words to make sure he heard Haibara correctly, while he's also distracted by the start of what they're doing. Haibara explains it further, and that makes some sense. He slides his hand under Haibara's shirt, feeling skin warm beneath his palm.

He cannot help the effect his name has on him. His hips jerk upward out of the rhythm they've set. He rubs his hand against Haibara through what he's wearing first. Then he opens Haibara's pants and continues through much less. "Later," he agrees, as he works to get Haibara hard and enjoys each moment of it.