Accel World Novel Volume 10 is written by Reki Kawahara.

The Sound of Water on a Distant Day

2046. Haruyuki, a.k.a Silver Crow, member of the reborn Nega Nebulus, makes a certain blunder and sees a sudden, precipitous drop in Burst Points. Given that he is backed up against the wall, Takumu suggests he hire an Accelerated World bouncer.

Spring 2047. Haruyuki is plunged into an unprecedented crisis due to the machinations of new student Seiji Nomi. At the same time in Okinawa on a school trip, Kuroyukihime is set up for a duel by a strange Burst Linker.