The Tower of Druaga: the Aegis of Uruk
Druaga no Tō ~the Aegis of URUK~ (Japanese)
برج درواجا : درع يورُك (Arabic)
ドルアーガの塔 〜the Aegis of URUK〜 (Japanese)
The Summer of "Anu": In a summer once every five years, demons in the mysterious Tower of Druaga lose their powers due to the magic spell cast by a god named "Anu". King Gilgamesh, ruler of the kingdom Uruk, uses the appearance of demons as an excuse to invade the tower and find out the construct's secrets. As 80 years passed, the Uruk army managed to fight back the demons and built a fortress city and safe haven on the very first floor of Druaga - Metz Kier. Thus begins the story of a warrior named Jil who, finding companions along the way, embarks on a quest for the fabled Blue Crystal Rod, a powerful artifact rumored to be in the highest floor of Druaga. However, other competitors, including the kingdom of Uruk itself, want the treasure, all for their own reasons.
i certainly don't expect that this anime is so good. i merely watch this just to fill my free time before latest episodes of my favorite anime to come out. it have the hilarious, serious, sad, twist and action all in one anime. it's a pity that this anime didn't have much reception like ao no exorcist, SAO or other mainstream animes. so underrated..