Jyu Oh Sei, Guin Saga Recommendations
Jyu Oh Sei and Guin Saga are very similar in the sense that both of the stories' characters resemble a character from the other. Both series are based on survival of the fittest, and are full action packed adventures leaving you with the wanting for more after every episode.
both stories are about twins who get taken out of their world and meet an array of interesting characters along the way. both series also seem to carry out the theme of survival of the fittest and both have similar art styles.