Wouldn't it be fine if I just did everything alone

In a world dominated by the rare power called “Gifts,” Clais was a boy given only the Gift of “Holy Grail,” whose use he didn’t even understand. Still, without losing heart, he formed a party with his childhood friend Hinoka, who possessed the “Sword Saint” Gift, and took on guild missions. But due to a minor misunderstanding and betrayal, his mind and body collapsed. At the same time, Clais’s Gift revealed its true value. The “Holy Grail” was the pinnacle of power, able to bestow any Gift in this world upon himself and others. After losing everything, and then gaining everything, will he choose the end of the world, or perhaps—