If it's stolen, the invincible duo can retrieve it. Get Backers starts off as a shounen pooled with middling comedy and ecchi. Our main duo, Ginji Amano and Mido Ban are a down-and-out hobos. It is unlike any other shounen out there. It doesn't subscribe to shounen tropes and cliches, and the lack of romance, which ruins other works makes GB captivating. The plot and setting are rather elaborate, that you'll have to pay attention reading if you are to properly understand what's going on.
Most of the time, the combatants are transported into some kind of reality, which I took as the author's way for our protagonists to not concern themselves about civilians getting hurt or dying (which is annoyingly common in other shounen) as they enter a brawl. One thing I love about GB is how the plot allows for our protagonists to be teamed up with their foregone enemies, and be enemies again whereby making you want to see who'll be there in the penultimate arc. As the story advances, our main duo and supporting characters' background and circumstances are fleshed out.
The historical and biblical allusions here and there doesn't undermine and spoil the experience like in other shounen; they were perfectly cogent and justifiable. GB introduced me to the rare and enigmatic Motion Blindness and to one of the most interesting theological puzzle concerning the bibles' two eminent plotholes: Predetermination and Free Will, as Makubex asserts that without Judas' betrayal, there can be no ressurection of Jesus and humanity's redemption. I also had a whale of a time for its comical aspect. GB got me thinking and laughing at Ginji and Mido so it gets my props for that.
Aesthetic-wise, Rando Ayamine and his assistants surely put a lot of effort into GB. The art was consistent and kept improving in the long run despite the pressure of having to finish a tankoubon every two months. It is no exaggeration to say that the art is one of the best among other action manga. The background and action scenes were intensively drawn insofar as there's never a dull moment . If anything, I wish they had pour on a little more work to the character designs. There is regular emergence of an antagonist who either looked like Kazuki or Hevn. Nonetheless, I really enjoy seeing those spiky, long, shounen hair style.
I have only read 23 volumes so far, but I may input more once I finish it. At any rate, I believe that Get Backers is one of the most substantial action manga ever made, and that everyone owe it to themselves to give GB a read