Professor Senbei finds a videotape of his deceased father providing instructions on how to create a love potion. The main ingredient is a tear of the evil Gyaasuka Daimao who lives at the Wonder Island. To retrieve it, Senbei takes Arale and Gatchan on a wacky adventure. (Source: ANN)

After he witnesses his father's murder at the family dojo, Hazuki Ryou dedicates his life to finding the man responsible—a mission that takes him from the streets of Yokosuka, Japan to the sprawling metropolis of Hong Kong, and beyond. Soon he will learn that larger, mystical forces are at play as he trains to become the ultimate martial artist in his quest for revenge.

The World as we know it has been torn apart shattered by a series of natural disasters that have turned civilization into a brutish nightmare of survival and has left whole cities buried beneath the Earth. It's now a lethal and chaotic place, a place where only the strongest and most savage remain alive. The strongest of them all is a giant warrior known as Violence Jack… Violence Jack tries to avert a civil war brewing among the wretched inhabitants of a subterranean metropolis called Evil Town. Based on a character created by manga horror specialist, Go Nagai. (Source: AniDB)

The franchise's story is set in a world over a decade after futsal has skyrocketed in global popularity. Protagonist Haru Yamato watches the championship of the U-18 world cup and is inspired by a Japanese player named Tokinari Tenōji. He joins the Koyo Academy High School's futsal team with the goal of becoming a player like Tenōji. There, he finds friends, and together they face their rivals.