Awakening Eclipse

In a world where humanoid beings called Crystalites, Fiarites, Ness, and Watarites call home, everyone is born with a unique mask connected to their lives. If the mask breaks, they die, and their head disintegrates, leaving the body behind.
J is one of them, a crystalite boy haunted by an uncanny nightmare. But he never thought that it would come true. One day, J and his friends were heading to school when a news plate announced that a calamity-class criminal, Bolo Agon, had escaped and was attacking Soma, Akagi, and Konaya. The group decided to skip school and get coffee, but fate had other plans.
In the coffee shop, they were summoned to a world where abilities called Eclipses, born from desire and beliefs, are wielded by people called the Eclipse Holders. And the group is expected to become one of those Eclipse Holders and defeat the demon king Noctis Agon.
Though reluctant at first, they agree. But as they go on their journey, they uncover truths that they were never meant to find. Now what will happen to them? Will they be allowed to live even after learning the truth, or will they be killed? Will they be able to return to their world? Will they be able to defeat the villain?