Sword Art Online: Celeste no Yousei
ソードアート・オンライン チェレステの妖精
"...And so, this short story became ‘A tale of Kirito riding a bicycle’, but it’s a story I wanted to write since the past as well, so I would be glad if you enjoyed it. I’ll write a story that involves playing games next time." (Kawahara Reki in this story´s afterword)
(Source: Tap-Trans)