Decalon M, the first Android game in the series of the same name, will allow you to enjoy a dark fantasy world filled with monsters, dungeons, and other dangers. This time, the game is based on a story of an adult-only hardcore RPG with a free-transfer system. 

In this game, the goal is to eliminate the evil that has spread all over the world. To do this, you have to find the source of the evil and destroy it. To do so, you will have to go on a journey in an unknown world.

The main character is an adventurer who is searching for the source of the evil.