[He does not, in fact, get a response in a minute or two. It's closer to five because Ryou had, at that time, decided he was going to take a shower and so he didn't hear the doorbell.

It's not as if they get unplanned visitors often--most visitors already know about the trap anyway!--so he has no reason to worry about it.

You know, until it actually happens and he's the only one home and oh shit someone's in the hole...!

So yes, about five minutes after Holmes gets pulled into the security measures, he'll be greeted by a harried, out of breath shade who still has the good sense to peep in rather than let potential trouble out. After all, he'd very much pissed off Black Hat so a bit of caution isn't remiss.

But when he sees who it is...oh. That's not Black Hat looking for trouble at all.]

Ah, um. Hello, Mr. Holmes. I apologize for the tight security, but...it's how we had the house made, you see, and I didn't hear the doorbell immediately so...a-anyway, one moment.

[He slips the peepslot closed and opens the door to let Holmes out. He really hopes there isn't any hard feelings, even though the few interactions he's had with this guy have been...a little awkward to say the least.]