When they all heard Kaede's peace suggestion, they were happy. But when things turned, then turned-it ended with the green bear overruling Monokuma and declaring peace once more. Everyone easily agreed, deciding that no more killing was the best. They all soon tossed away the motive and continued on with peace. Something the green bear was easily approving of.
Think of this as Monomi defeating Monokuma in the alternate mode from Danganronpa 2. So basically, it's a sudden Salmon Team mode.
This book contains spoilers and there MAY be a slight hint of Kokichi/Shuichi.
Art on cover belongs to BloodnSpice on DeviantArt.