Zoids Wild Zero

Zoids Wild Zero is an anime series that aired from 2019 to 2020.

Part of the Zoids franchise, the story is set in an era where Earth had become inhospitable to life, forcing humans to migrate to Planet Zi, the natural home to metallic life forms known as Zoids. However, Zi also faces it's end many years later, forcing the humans to migrate back to Earth and attempt to regenerate it back to it's former self through a Zi-Forming scheme. Unfortunately, the plan fails and Earth is left in a state of turmoil, now overrun by Zoids and facing unstable weather phenomena. Meanwhile, the Empire and Republic settlements have been formed, attempting to find as many Zoids as possible to bolster their respective armies.

One day, second-generation Earth citizen Leo Conrad has a chance encounter with a girl named Sally who possesses a mysterious pendant while on the run from the Empire.

Episode 2
Leo lifts his shirt up to show his metal heart.

Episode 7
Leo is treated after getting injured.