SSSS.GRIDMAN is a 2018 anime series produced by Tsuburaya Productions and Studio Trigger, based on the titular character of the series. Denkou Choujin Gridman. Despite having characters and themes based on the original series, this series is not a reboot. The series has been licensed by Funimation. – Source: Ultraman Wiki

The story focuses on Yūta Hibiki, an amnesiac first-year high school student living in the fictional Japanese city of Tsutsujidai. He meets the Hyper Agent Gridman in an old computer. The sudden appearance of Kaiju changes the relationships of Yūta and his classmates. Hibiki is able to merge with Gridman to fight kaiju, but after the kaiju attacks, people’s memories are reset and those who die are forgotten. Hibiki and his friends seek to stop the kaiju. – Source: Wikipedia