Forgotten Realm: Mist Abyss

In a Western fantasy medieval world, the underground country [Altland], which was originally the seclusion of legendary heroes, has become a disaster with legions of the dead emerging from the depths of the earth after the earth was torn apart. Yao Cheng from another world was transported to this world because of a certain magic, and he embarked on a journey to find the root cause with the original resident Artur.