Ta-Guan isn’t a simple northern marten. She was born from a stone egg. A little later, she mastered the human language; and then she ended up in the Heavens.
In ‘Adventures of Takuan,’ the celestial marten is one of the main tricksters. She does not sit still; she is ambitious and cunning, although this cunning sometimes works against her.
If you want to know a little more about the celestial marten, you must visit Ta-Guan’s page on Makipedia, the encyclopedia of Anno Ruini.