After seeing the human world suffering from declining birthrate, youkai have set up a hidden brothel in the mountains. Its purpose: help young men get their confidence back by having them have some fun with a beautiful youkai.

The protagonist is visiting his youkai brothel for the first time and his host is Momiji. He’s in for very fun first time.
*All characters depicted in this work of fiction are adults, regardless of their visual representation or textual description, and are not based on any real person*