Mushoku Tensei: Jobless Reincarnation Part 2

After parting ways with Lilia and Aisha, Rudeus and his friends head to their homeland. On their way, they encounter Orsted, the Dragon God, one of the seven great powers. Eris and Ruijerd suddenly change their expressions and begin to tremble. Although they have never met before, Orsted knows Eris, Ruijerd, and even Paul well, but he doesn't seem to know about Rudeus. When Rudeus answers a question from Orsted, Orsted suddenly attacks him! (Source: Mushoku Tensei Wiki)