The Ruins of Luxoria

Crona, on her way to school, accidentally stumbles into a mysterious ruin.
There, she finds a door leading to a world inhabited by dangerous monsters.
However, it seems she cannot escape without collecting items in that world.
Will Crona be able to escape safely and return to her own world?

Rosina is an investigator with a strong sense of justice. While investigating a missing case, she accidentally fall into the Fallen land. In there, Rosina soon discovers the truth behind the missing people. However, the pathway connecting the two worlds will only open under certain conditions. In addition, the brutal creatures of the fallen land begin to gradually surround her. She must fight and survive until the way home opens again.

Once every few decades, the gate to a lost city with untold treasure is opened for a limited time.
Adventurer Ruka has come to the ruins of this city to see what he can see.
But there is a condition: the gate can only be traversed by a young girl.
His quest seemingly over before it begins, Ruka is helped by a mysterious fox spirit.
She lends him the power of a girl… by turning him into one himself!
 

On my way home from school after dark…
You encounter strange things and wander into mysterious ruins.
There were people crawling in the darkness.

Eguchi, a girl who loves sex, goes to this kind of place in her fantasies every night and engages in lewd acts…
This time the setting is an abandoned swamp!
Piss in a dilapidated mansion or a murky lake! Use all the adult goods you find! Change into as many cosplay costumes as you like!
You can masturbate whenever you like, wherever you like!
There are also plenty of naughty gimmicks in specific locations, and fantasy situations where you’re attacked by lewd monsters!!
Enjoy the ruins of this free and unrestrained fantasy world as much as you like!!!