Tate no Yuusha no Nariagari.
Where do I start... oh right.
Story- 8
Some people consider this as a somewhat typical storyline.
The "hero" is taken from his world to another to fight against "Waves" of monsters that spawn once an hourglass in the center of the town turns to 0.
It's a manga with heavy RPG elements and a pretty good plot.
Art- 10
The art is amazing.
Characters are well drawn, with beautiful backgrounds.
The action is clean, and I love the way the armor and weapons of the different heroes are depicted.
Characters- 10
The main character is far from the typical selfless hero.
He's cynical with a negative outlook on the world around him.
Raphtalia, the "slave" he purchased has trauma from being a survivor of the Waves.
The main "antagonists" are indeed the monsters in the Wave, but there's another side for the antagonists, which you'll quickly find out.
Overall- 9
This is an amazing manga. It's an RPG fantasy with amazing art, great characters, and a pretty good story even if it's somewhat cliché.
It's a must-read for everyone.