Dysfunctional Systems Episode 0: Orientation

This is a sleep simulation game where you play pranks on a sleeping girl.
Use your mouse to touch her.
Fill her heart gauge carefully without waking her, and use the vial to send her into a deeper sleep…
 

This is a sleep simulation game where you play pranks on a sleeping girl.
Use your mouse to touch her.
Fill her heart gauge carefully without waking her, and use the vial to send her into a deeper sleep…
 

A sleep simulation where you play tricks on a sleeping girl.
You can touch her with the mouse.
Be careful not to wake her up, fill her heart, and
use the vial to put her into a deeper sleep.

Once upon a time, in a topsy-turvy world…
In the beginning, you find yourself lost within a world of utter darkness. Your memories are gone; even your name is a mystery.
But just when the bitter loneliness threatens to break your spirit, you meet Alice—a blond-haired, blue-eyed young man who promptly christens you "Arisu."
Like you, Alice cannot remember anything beyond his own name. Ignoring his protests, you drag him along with you through the darkness… until you happen upon a massive mirror made of crystal.
You stumble through the glass and into the Looking-Glass World, an antiquated fairytale dreamscape that feels oddly familiar…
There, amid a colorful cast of gender-swapped fairytale characters, you take on the role of the heroine and join them in their twisted tales.

Years after the battle with Naiolo ended, strange news has reach Amakubo Yuri, the developer of ExS-TIA System. It's about someone who looks like Amakubo Kaede, her older sister whom she once fought and suppose to be dead, has been seen on a remote island. To ensure the truth, Yuri contacting Souma and depart together to the island immediately!

Story about Yuri, ExS-TIA heroine who doesn't has a single side episode, has been made. Story of Yuri and Kaede that more or less has been conclude in ExS-Tia 3 but you want to see more, also enjoyable to be played as the sequel to the original works.