SSSS.Gridman (2018)

Yuta Hibiki can't remember who he is, and now he's seeing and hearing things that others don't. A voice from an old computer tells him to remember his calling, and he sees a massive, unmoving creature in the distance. Nothing's making sense-until the behemoth springs to life. Suddenly, Yuta is pulled into the digital world, reappearing in the real one as the colossal hero-Gridman.