Aruthral: The Broken Ones

Xen, Mikey, and Lee were your average high school students. As they were going home, the three friends encountered a mysterious man who said to them: “Three heroes must fight to avenge the Broken Ones, one with the power of Death, one who can control Celestial fire, and one who can control Portals.” Thinking the man must be crazy, the three went on with their business. Once they got home, they played games until something strange happened. They felt weaker and weaker as seconds passed until they passed out. Hours later, they found themselves in a different place from each other in the realm of Aruthral. What awaits the three in this land? Who are the "Broken Ones"? How will they return to their home?