This composite bow is the gift Aster mentioned he was preparing for Kana, and it was specially tailored for the little girl, its shooting range is not that larger when compared to the longbows, around a third more meaning it can cover a bit more than a kilometer.
The bigger differences between this composite bow and the longbows that the other girls were using, is first and formal the strength needed to properly draw the string.
To give you a general idea, the Olympic standard for drawing force in terms or archery it's between 20 to 30 kilograms at its highest, that's of course not the limit of the drawing strength a normal human can achieve, but that's a stable limit than practically any healthy adult can achieve with training.
