post an anime series which had an unconvincing ending!

GetBackers

The anime was a Super Epic Sky Rocketing one..........they showed the limitless Fortress..and berkata that the babylone city on puncak, atas of the limitless fortress is the dangerous place of all.......they didnt tampil it atau revealed anything about that..and they didnt showed full power of Ban Miedo and Ginji Amano..........in the end everything became a mystery.........and they really had a good strory line and they finished the anime without revealing anything............it was really a unconvincing ending!

i relly want a continuation from the last episode of this anime..........!!!!!!!