Yuta Hibiki awakens with amnesia and the ability see things that others cannot. He first encounters a Gridman in the reflection of his friend Rikka Takarada’s computer and it tells him to “Remember his calling,” but Yuta doesn’t understand what this means. Later, in the distance, he sees an extremely large monster but it doesn’t move. It’s only when Yuta gets to school that the two sightings make sense: a monster attacks and the hero Yuta saw in the computer screen pulls him within the computer and transforms Yuta into a giant hero named Gridman. – ANN
Streaming: Crunchyroll and Funimation
Episodes: 12
Source: Original
Episode Summary: Yuta Hibiki wakes up in his classmate Rikka’s living room remembering nothing about who he is or why he’s there; he learns that Rikka discovered him collapsed on the street outside her home, and is a bit irritated by his continued presence. What’s more worrisome is that Yuta has started to hallucinate; he sees an image of a costumed hero called “Gridman” on a monitor of one of Rikka’s mother’s old computers. No one else can see the mysterious Gridman, so Yuta decides to play it off as well as he can. After Rikka does some detective work to find out where he lives, she walks Yuta home.
Yuta learns that his parents are out of the country, so tries to take care of himself as best he can. His friend Utsumi picks him up the next morning and makes sure he gets to school. All seems relatively well considering the circumstances. But Yuta senses the shadow of a beast lurking around the town’s horizon; yet another image that no one else sees or acknowledges. As the day turns to evening, though, the beast awakens and begins to tear into the city. Yuta hears a voice in his head and he makes his way back to the old computer in Rikka’s home where he sees Gridman. Yuta is pulled into the computer and joins with Gridman to fight the kaiju, ultimately tearing the robotic creature apart. This unorthodox way of defending the city appears to be Yuta’s destiny, but the workings of this partnership, as well as the roles Rikka and Utsumi might play, are still a mystery to all.