Sona's doing the "Tawawa Challenge"

I think the translation is "When are you going to pick me, Summoner?"

I can't read Korean, though, so don't quote me on that.

Source: http://www.pixiv.net/member_illust.php?mode=medium&illust_id=59641268

Context: http://knowyourmeme.com/memes/tawawachallenge