Angel of Echidna ~Love-colored Cohabitation~

In this game, you play as Fujita Hiroyuki, a high-school student who seems to have more interest in romance than in his studies. In his school there are several pretty girls, and his goal is to be nice to one of them, to make the right decisions when talking to her, and ultimately to win her heart.
 
Remake of the original PC version featuring a completely revised script, with some of the heroines having completely different stories as a result, full voice acting for all characters except the protagonist, new art, and mini-games.

In a future over one hundred years hence...

All the people in the world have awakened to unique abilities called 'Dunamis'. As these special powers become rooted in people's everyday lives, their value system changes, and those who lack powers are the ones who are treated as strange. With the passing of the ages, the environment has changed completely, while society has greatly regressed. The overall population of mankind has diminished as well, and most of the world is made up of wastelands and greenery dotted with the weathered ruins of the world before.

The City of Raillore.

With brickwork buildings like those of the Middle Ages, developed over land graced with lush greenery and rivers. With the concept of nations gone from the world, Raillore exists as something of a self-sufficient commune. The Order of Security and Regulatory Knights - AKA the Regulatory Corps - serves as a government organization in charge of handling crime prevention and other tasks that require force of arms.

But things begin to change as odd incidents take place, one after another...

Those possessing abilities different from those of Dunamis begin to appear. The people fear this power and the phenomena it causes, and those capable of it are designated as ‘Errors’. The sudden appearance of these Errors is regarded as a disease, and the handling of Errors is placed under the jurisdiction of the Regulatory Corps. As people tremble in fear of the vicissitudes of the changing times, there are those who try to open a way to the future with their own strength...
 

Having recognized Minazuki Kashou’s talents in running his patissiere, Beignet felt her role was over. So she closed La Soleil in France and entrusted Fraise, the catgirl she raised, to him.

Fraise feels a fondness towards Kashou but becomes bewildered in the face of his 6 catpanions. She turns to Shigure for advice but she too harbors a hidden love for him. Fraise feels that the relationship between siblings is the most important while Shigure feels the happiness of her catgirls is what is most important.

Motivated by their desire to make sure the other is able to fulfill their love for Kashou first, the battle between catgirl and girl begins!

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…

Maybe I was destined to become a permanent employee of the King of Hell in this life, and then spend the rest of my life happily with beautiful women. However, I was transported to another world because I mistakenly touched a button.
When I arrived in this world, in front of my eyes were two women who were changing their clothes and stroking each other's bodies. Because of my arrival, their movements suddenly stopped ......
"Peeping Tom!" What kind of anticlimactic opening is this?
Future technology? Time travelers? The Mobile Unit? An amusement park on the verge of bankruptcy? What kind of nonsense is this?
Let's rebuild the amusement park with Keon, a genius girl, and Dee, a secretarial girls in professional attire!! Find a way to get back.
Wait a minute. Why am I working at an amusement park when I'm in another world?