User blog comment:MyProjectAlicization/Kuroyukihime - Kirito and Asuna's daughter?/@comment-221.181.34.204-20140110101931/@comment-26391060-20140110140326

There're no relationships for that...also, as the 100th comment to the blog, i suggest closing the blog's comment as it'd already been know that author of both series won't officially consider both works are in the same universe in foreseeable future thus the hypothesis can't be made valid.