KNIGHT SLAVE -The Dark Valkyrie of Depravity-

Kasumi, a skilled resistance soldier, battles an oppressive enemy regime in a tense, stealth-driven world. Joined by allies like Karakal and Puma, she undertakes perilous missions to undermine the enemy.
Will she be able to succeed and destroy all evil, or will she succumb to the growing temptations in her path?

Hello, this is Mia. When I woke up, I found myself trapped in a strange and terrifying place... I was surrounded by creepy monsters, unpleasant smells and strange sounds. But I have to get away from here. I have to be brave and take one step at a time.
 
...Will you help me?
 
Honestly, I don't know if you'll really answer my questions. But...there's this terrifying whisper in my head that I keep hearing. That whisper tells me that you will definitely help me. And Mia whispers to you some important information to help her along the way:
 
"It's your job to help Mia move forward.
 
But the road is very dangerous...many monsters are trying to attack her.
 
Even so, please don't give up.
 
With my help, Mia can see if the monsters have found her.
 
That information is projected directly onto her retina as a light like a line of sight.
 
I'm sure it will help you.
 
The fact that you've listened this far means that you're interested in helping Mia.
 
I'm going to tell you something very important...please listen carefully.
 
Mia will pass by...↓↓↓

A world where dragons have been hunted to extinction by humans.
The disciple of the master swordsman, Reiri, is still trapped in a nightmare from 15 years ago.
“A hometown turned to stone,” “A black dragon,” “A man playing the flute”…
Just as she had almost given up, thinking there was no way to find out the truth, she receives news that a “black dragon” has appeared.
Unable to stay here any longer, Reiri leaves her familiar home and sets out on a journey.
A journey to face fate, conspiracy, and herself…

One day, an island suddenly appeared in the sea about 100km east of the Kingdom of Greatland.
Some people land on the island, some by order of the country, some to investigate, and some just to check it out.
In the island, which quickly becomes crowded with people, one boy wakes up.
The boy, Riku, has lost his memory.
Wandering around without knowing anything, Riku meets
Sienna Clark, a nun apprentice, and Mira, a self-proclaimed archaeologist.
One of them is there to keep an eye on him, while the other is curious.
Thus, the party is complete, and they will explore the secrets of themselves and the island.
Will they resist or succumb to the difficulties that stand before them one after another?
The adventure begins, depending on their own choices!

Corrupt and take the man's two precious seniors!
 
Rune, a fledgling adventurer, had two precious ladies in his life:
Tisia, the swordswoman;
and Salaphil, the mage.
They're both veteran adventurers, and older sisters the man longs for.

They gently taught him swordsmanship and magic, and also helped him grow as an adventurer,
showing their affection for him.

The man and his kind seniors set out on a highly difficult quest.

But they had no way of knowing their fate!
That high difficulty level quest was not suitable for their stature...
 
The game system is played through card battles.
 
Battle by placing cards from a group of cards called "folders" on a step!

If you win with a stronger card than your opponent's, you attack!
If you lose with a card weaker than your opponent's, you take damage!


But if the cards are not well aligned, you may not be able to win well.
However, the distance advantage system gives you a chance to attack even if you are defeated!
Weak cards have their own uses!
You've got to make the most of your cards and lead your team to victory - are you up to that challenge?