The uninvited visitors
The uninvited visitors is a story written by Hyakunichisou 13. It ran in Special Issue 12 at http://s2b2.livejournal.com/354313.html, and is mirrored at http://www.shousetsubangbang.com/mirror/the-uninvited-visitors/.
Strange aliens visit a foreign planet in the far future, and it is prophesied that a Chosen One will deal with them. Alice is a grown woman who's joined the much-younger prospective Chosen Ones for reasons even she does not fully understand.