Jibaku-kun (ジバクくん) is a Japanese manga series written and illustrated by Ami Shibata.

It was adapted into a 26-episode anime television series called Jibaku-kun: Twelve Worlds Story (ジバクくん TWELVE WORLDS STORY, Jibaku-kun: Tuerubu Wārudo Sutōrī) which was broadcast on TV Tokyo from October 5, 1999 to March 28, 2000.

The Great Child is always accompanied by a spirit, an explosive, spherical side-kick that helps defeat the Troublemonsters.

When En, the Great Child – someone specialized in fighting against troublesome monsters – of World One, entrusts him with his Spirit and G.C.

Watch, Baku embarks on an adventure through the twelve worlds to make his dream a reality at all costs.