Talk:Rou/@comment-71.251.26.46-20160201061540/@comment-121.54.54.45-20160201084800

Evolution only occurs after someone has gone to sleep. Promotions work differently since Redhead got her Noir Soldier job after she was done fighting and eating some kobolds.

See the fight against the King of The Mountain. After he had defeated it, he felt an overwhelming urge to fall asleep after unconsciously setting up a defensive perimeter around himself. He did the same after his fight against the Dragon Empress concluded when he made a cocoon. So considering the game-like structure of the setting, a monster might be guided by "instinct" to fall asleep to evolve.