It's okay, he's well aware by now that he's bypassed Kanji's comfort zone by about a thousand miles, and - well. He feels he's done pretty well to rein himself in to just covering this much!
"That's fine," he says warmly, just glad Kanji's not actually running away in the face of all this information.
Then he remembers what Kanji was actually doing before they started talking about sex, and he asks, "Any chance you could finish putting up the curtains before you run off though? I'd really appreciate it!"