Dragon Nest: Shungeki no Sedo

A goddess named Altea, who created the peaceful world of Lagendia, fell into a deep sleep after being poisoned by her sister Vestinel. The only way to reverse the poison is by using the magic grail that caused it, which has vanished along with Vestinel. Altea can only communicate through dreams and sends messages to chosen heroes via prophets, urging them to find the grail and awaken her. To do this, the heroes must locate enchanted Power Stones, which help them connect with the prophets and understand Altea’s guidance. However, since Altea’s poisoning, the once-peaceful land has become dangerous, overrun by dragons that actively work to prevent the grail from being found and maintain the world’s suffering.