Envy ~tale of the witch who grasped a puppy~

A witch by the name of Sarah who lives in the woods comes across a beastboy.
She picks him up, and names him Sian.
Sian is an obedient, hard working puppy, and the witch takes good care of him, but...
when Sian finds out that Sarah had sex with another man... he becomes disobedient...!?
It would seem that Sarah also has a secret...?

An erotic fantasy tale featuring the transformation of a cute boy into a go-getter hottie,
and a cool witch who gets knocked off her feet and swept away by pleasure.

(Source: DLsite garumani)