The second son of the Oosawagi family. With a very healthy and lively personality. He is also an incorrigible idiot. Although he is often seen as aggressive and uninhibited, he also cares about his friends and holds a leadership position among his classmates.

(Source: Namuwiki)

Join the madcap adventures of the Osawagi family. Little Kotetsu, arguably the most energetic boy in the town of Urayasu, is always getting into mischief with his band of quirky friends. Features unique, well-drawn characters and fast-paced action and humor.<br><br>
(Source: TBS)

Kotetsu Oosawagi