Accel world, vol. 22 (light novel): sun god of absolute flame - Reki Kawahara

Prepare for a full dive Despite their grueling battle and narrow victory over Oscillatory Universe, Nega Nebulus was unable to get any hard evidence of the connection between the White Legion and the Acceleration Research Society.

or so they thought.

Thanks to a key exchange captured by Chocolat Puppeter's replay card, they've got all the proof they need It's time to expose the White Legion's crimes before the entire Accelerated World Let the fourth meeting of the Seven Kings begin.