Second season of Nanatsu no Taizai: Mokushiroku no Yonkishi.

In 2050 Riyadh, elder Asma's richly captivating storytelling transports her cherished grandchildren to fabled times where they learn that modern-day dilemmas are no match for the trials, tribulations and words of wisdom passed from generation to generation through their fascinating folktales. (Source: Sentai Filmworks)

In the Disabled Elderly Village, there live nine elderly people with unpredictable origins and the young man Qin Mu they raised. One day, the cows that Qin Mu was responsible for grazing began to speak human words. From then on, Qin Mu became more aware of the dangers and beauty of Daxu, a land abandoned by gods: demons descended with darkness, divine bones danced in the ruins, and dragon bones protected their young, a giant ship that drags the sun... No matter what kind of danger he faces, Qin Mu is fearless. He has integrated the skills passed down by the Nine Elders and vowed to carve out a world with his unparalleled hegemony. (Source: Bilibili, Google translated)

The old herbivorous dragon, who gets mistaken for an evil dragon, and Reiko, a young girl with miraculous powers, arrive in a totally new country, Asgar, where the herbivorous dragon keeps taking the blame when he gets caught up in an elaborate conspiracy. Even though he just wants to live a peaceful life, the herbivorous dragon is continuously getting stuck in his role as the evil dragon and walks further and further down the road towards overthrowing the demon king. (Source: bilibili, translated)