MC is highjacked by aliens to an island togther with 2 other guys and 97 females and has to fight in dungeons while learning his new skills and abilities. Big harem theme.
The progression story was more interesting than I expected on the other hand the interaction between the characters was not very believable.
Ended in some kind of mysterious dark glimpse into the future - even worse than a cliffhanger. I hated that. ( )