hmm. what if
one of those transformation-flavoured stories where a character discoveres their True Self™ as a slinky creacher or mighty beast or dragon or some such
except the assumed-default/original form isn't human either
perhaps ambiguous nonhuman, in the Journey-esque cloaked figure school of character design

but also i think the ambiguous humanoid in cloak character archetype would be improved by several orders of magnitude by including a tail as a standard feature