Overview:

Once upon a time, demons and humans lived in peace.
However, as they spent more time together, conflicts began to arise between the two tribes…
Finally, a battle broke out between the two tribes…
The battle ended with the demons’ defeat…

…One day, a strange disease of unknown cause began to spread among the Oni tribe.
Demons affected by this disease are no longer able to give birth to male demon offspring.
The boys who were raised grew to adulthood in the Oni tribe’s village and had children with the Oni women in the village.
Some of the demons thought this would be an opportunity to coexist with humans again and started a “festival” for the adult boy…

5 heroines who can have erotic battles
At least 9 erotic battle portraits per person (30 or more including differences)
5 heroines in tag mode (full color manga)
Tag mode (full color manga) at least 13 photos per person
4 types of mini games
Part of Live2D uses tag mode (full color manga)
I use some Live2D for erotic battles.