Andrey, the father who unknowingly possesses the magic chest Kuzya gifted him decades ago during his childhood, making his family the center of the conflict.
Natasha's family makes her father central to the magical conflict.
The plot places Kuzya in the apartment of Natasha and her parents, and identifies Natasha's Dad as the holder of the chest.
Their past connection explains why the chest is in the human family.
Kuzya himself gave the magic chest to Natasha's Dad many years ago.
The father's possession conflicts with Baba Yaga's attempt to recover the object.
Natasha's Dad possesses the chest, while Baba Yaga enters the human world searching for that same chest.
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