User blog comment:TUSF/Kuroyukihime NOT Asuna&Kirito's Daughter/@comment-6021376-20130612205901/@comment-3250527-20140815164000

Though a possibility, I find it more believable if people started saying that Graphite Edge was the kid of Kirito and Asuna. After all, he was the one whobrought three of Kirito's known Sword skills into Brain Burst.

But I'm putting this forward only having been exposed through the AW wiki, so you may ignore me.