Ratman Series by Sekihiko Inui

Shuto Katsuragi is a superhero otaku. Only problem is, he's too short and always getting teased for his height...especially when he tries to emulate his favorite superhero! To make matters worse, Shuto suddenly gets abducted and tricked into participating in some rather sketchy and super-villainous experiments! What's a shrimp to do when his dreams come true in ways he never expected?

Despite having been tricked into helping a bunch of weirdo villains, Shuto still hasn't given up on his dream of being a hero. Determined to prove his worth as a crime fighter, he starts going after bad guys on his own, with mixed results. And things really get complicated when Shuto is invited to the Hero Awards, and a fight breaks out among the attendees. How's Shuto supposed to figure out whose side to take when all the people there are "good guys"?

Originally published in Japan in 2007 by Kadokawa Shoten Pub. Co. Ltd., Tokyo.

What should have been an easy caper for Ratman goes south when a mysterious hero claiming to be from a secret, elite section of the Hero Association--called "Sector S"--appears. Unable even to scratch this new hero, Shuto is mercilessly beaten down, and the drubbing was enough to ruin his confidence in himself as Ratman. Will Shuto decide to quit Jackal? What's a would-be super hero to do?