Psyren is one of the best mangas I've ever read.

Story: The story starts simple enough and gradually changes into a more complicated and deep story, but the pace in which it changes is good as it doesn't arouse any confusion.

Art: The art fits perfectly with the story, serious when needed and light & funny when needed.

Characters: Each character has their own personality, so there aren't any recycled personalities. Also the designs fit perfectly with their personality.

Psyren is a truly perfect manga throughout the story and would also make an awesome anime; I've enjoyed it enough to read it twice and highly recommend anyone to read this.