 If you liked
Ichiban Ushiro no Daimaou
|
 ...then you might like
Seikoku no Dragonar
|
Though these two are pretty different in terms of setting, certain traits of characters in Daimaou overlap with Dragonar's protagonist and his friends.
Both shows are also harem fantasy/action anime, so if you enjoyed Dragonar, then you will definitely en will definitely like/love Ichiban Ushiro no Daimaou.