Originally Posted by seigex

If for whatever reason they're not able to (I don't see any reason why they wouldn't), you can also check in for the ANA segment at NRT. They have a transfer desk in Terminal 1. Also, since this is booked via VS, I assume you have a J or F ticket, you should get automatic check in with a boarding pass issued to you electronically like 24 hours before your flight, so it might not even be an issue for you since you're not checking bags.

To your question, yeah definitely bring a printout of your itinerary for ANA, it'll make checkin much smoother.