Character from Shinrabanshou's 2012 storyline, Daimaou to Yattsu no Pillar. A fake identity used by Ark Mateus when he is magically transformed into a human girl in order to disguise himself. Because of Ark's original gender and the fact that Ako's gender is officially given as "Female?", she is often portrayed as a trap in fanart.
Ako's trap appeal garnered her enough popularity to win first place in the "other" gender category of the Shinrabanshou All-Stars Popularity Contest of 2014.
