Sword Art Online: Kiss & Fly, Vol. 3 (manga) — Reki Kawahara

Witness the first steps in the story of the girl who would one day become the infamous “Zekken!” Leaving behind the VR hospice program Serene Garden, Yuuki and her older sister Ran follow their new friend Merida into the Japanese-style VRMMMORPG Asuka Empire! Astounded by the twins' rapid progress, Merida questions how they acclimated so fast, leading Ran to divulge that they're running the game on modified NerveGear-- the same technology used to dive into SAO...