Comet Lucifer

In the world of Gift, the bowels of the planet hide a highly sought after crystalline substance known as Giftium. A young boy on Gift named Sougo Amagi inherited his interest in Giftium from his mother, a researcher. As an inhabitant of Garden Indigo, a small and prosperous miner's town, Sougo has many opportunities to forage and collect rare crystals that can only be found there. However, the most exciting treasure that Sougo discovers is not a crystal, but a person. After being pulled into a school quarrel, he plummets into the deep caverns of an old mine. There, in the abysmal depths of the earth, Felia—an enigmatic girl with red eyes and blue hair—emerges from a large crystal. Through this strange first encounter, bonds of friendship are formed between Felia and Sougo. But Felia is being pursued by a secret organization that aims to use her powers for their own benefit, and Sougo and his friends must help her, all while discovering the true nature of this girl from the crystal. Gift, a world covered in glittering blue crystals called gifdium. Sougo Amagi is a boy who lives in the town of Garden Indigo, which has prospered from the mining of these crystals. Sougo, whose hobby is collecting rare crystals, one day becomes involved in a dispute between classmates Kaon, Roman, and Otto. He wanders deep into the ruins of a mine and discovers an underground lake. There, Sougo meets a mysterious girl with blue hair and red eyes. Who is this girl, and what will their meeting bring? The door to an adventure opens with their newly formed bond.