WOWOW - 25 mins - TheTVDB, IMDB
You're not alone. On any day, anywhere. Yuta Hibiki, who is a first-year high school student living in Tsutsujidai, one day wakes up to find he has lost his memories. And he meets the "Hyper Agent Gridman" on his old computer Gridman says that Yuta has a mission he must fulfill, and Yuta sets out to find the meaning to those words and his memory loss. Yuta's friends — Sho Utsumi, Rikka Takarada, and Akane Shinjo — would always help him and spend their days with him. But, their tranquil days are suddenly and easily crushed with the appearance of kaiju.