Ratman

Ratman is a manga by Sekihiko Inui and published by Kadokawa Shoten. Ratman was serialized in the Japanese magazine Shōnen Ace, published by Kadokawa Shoten from August 2007 to June 2013. Kadokawa Shoten compiled its chapters into twelve tankōbon bound volumes.

Ratman was published in America by Tokyopop, but production ceased after volume 4.

Story
Shuto Katsuragi is a shrimp that can't catch a break. He wants to emulate his favourite super hero, Shiningman, but instead he gets teased all the time for his height and he can't win any fights. The one thing that keeps him going is his love for super heroes, which he shares with his classmate Mirea Mizushima. Little does he know that she's about to make his dreams come trueby tricking him into participating in her sister's experiments!