User blog comment:TUSF/Kuroyukihime NOT Asuna&Kirito's Daughter/@comment-50.46.234.15-20140629061349/@comment-1173941-20140629064152

In a more recent Q&A in Taiwan, the author blatantly stated Kuroyukihime was not their daughter. See C933103's translation of the interview, sourced from a Chinese website covering an event that Kawahara attended.

Q: Is Kuroyukihime the child of Kirito and Asuna?

Reki: This question is hard to answer, but i can say, they are not their daughter "biologically".

Make of this what you will.