Adult PC Game: Tsubomi's Naughty Garden Ver.1.0 by Yatuhusa no kobeya Archive

Mizuki Tsubomi visited the mountain at the forest school and suddenly awakened the obscene Snake God lived in the hole where an ancient shrine was.
She appeared in a naughty version of her own world that was created by the Snake God.
In order to return she needs to find this God again. Long naughty, obscene road awaits...