(Summary) Chrome Disaster 6th (Silver Crow) Vs Green Grande

5 people with ISS units was continuously PKing Ash Roller and Bush Wutan, Haru lost his cool and merged with CD to slaughter the 5 of them. After Olive Glove, the final one left standing, was burned by CD's Flame Breath (2nd generation's ability) Haru plucked out the ISS unit from Olive Glove. The ISS unit has a recall function if removed from the host, and it flew back to where it came. Haru followed the unit and decided against camping the 5 to completely eliminate them, not out of mercy but because the guys who spread the ISS programs are higher up on his $hit List than some random thugs.

Eventually, Haru flew to the skyscraper where the ISS units (and now Metatron) is based, and before Haru can go in to wreck everything Green Grande used his Incarnate System technique + The Strife to make a wall that completely blocked off Haru, and then Haru flew down to meet them. Iron Pound (3rd seat of 'Six Layered Armor' in Great Wall) was with Grande and fought Haru, and beaten Haru down to half health before Haru worked together with Beast to tear Iron Pound apart with a sneak attack (the fight was pretty good, but you guys are asking for Green Grande VS 6th CD I'll skip this for now )
Grande said he'll explain everything soon, the timing isn't quite right, but CD's Berserker instincts won out and Haru attacked Grande. Haru packed his Incarnate System into one slash with Star Caster, using 3rd generation's sword skill. 'Demon City', the stage where they are on right now that boasts the hardest terrain to be destroyed by physical force, did nothing as the skyscraper they're on had half of it obliterated by the impact between Haru's Star Caster and Green Grande's 'The Strife'. Black fire from Haru's sword threatened to burn away everything, but Green Grande's aura was like the World Tree which supported 9 worlds of Norse myths and withstood the attack. From the aura Haru got a bit of insight into Grande's history, how he supported many of the Accel World by hunting down monsters and leaving the point cards to be eaten by other Enemies, so when other hunters kill them they get even more points. Grande's been doing what he can to keep the BB2039 running behind the scenes.
Haru cooled down a bit after that exchange of blows, even Beast went silent. Haru scratched a 3mm wide gap into The Strife so Grande motioned Haru won that round, while Haru went and said he was trying to cut Grande in half.

Green Grande finally explained a bit, and Haru almost initiated hostilities again after Grande spoke of 'BrainBurst2039', 'AccelAssault2038', and 'CosmoCorrupt2040', with BB2039 being 'Trial #2'. Haru thought Grande was the GM (Game Master) and had everyone in Accel World dance like puppet on strings. Grande said he's only one of the early 'Pioneers', 1st generation Burst Linkers. Other Pioneers would have the same info, probably even more than he did.

Haru asked Beast if it knew anything, since it was around back at that time. Beast replied it doesn't care about anything other than slaughter, and Haru should do the same as well. Haru convinced Beast to be patient; Grande's isn't someone that they can just brute force through. Beast grumbled and went back into the depths and waited for the time being.