Board Thread:Questions and Answers/@comment-5592165-20131226112512/@comment-26391060-20131226120347

Those non-credit version  come together with Limited Edition of SAO blu-ray disc.

Each American BD boxset come together with one opening or ending that's non-credit

And in Japan release, NC OP 1 come together with Vol.1 BD limited edition, NC OP2 with Vol.6, NC ED1 with Vol. 5 and NC ED2 with Vol. 9