User blog comment:Jopjopjop/Volume 19 Spoilers/@comment-73.46.6.122-20150615204032/@comment-3290441-20150628152701

As far as I can tell, Independent avatar type sacred gears are a sub-classification of creation type sacred gears like Sword Birth and Annihilation Maker that creates a monster, singular not multiple like AM, to act like the manifestation of a Sacred Gear's power. As for the other thing, a Utsusemi, since I don't know what that is I can't say.