Hikaru Ohsawa

Two years after the end of the war between Gamma World and Human World, Alain and Makoto return to Gamma World to bring it back to its former glory. Their hard work is stopped when an enemy appears and reveals a horrifying truth to them.

When a mysterious boy named Frey steals Ghost and Specter’s Eyecons, they must call upon the powers of past Kamen Riders to defeat him.

When Takeru and his friends celebrate Kanon's 15th birthday, the sky suddenly changes its color. They investigate this phenomenon and discover a giant Eyecon in the sky emitting a strange light, which sucked them in.

45 years ago, a man was subjected to the experiments of the secret organization Shocker and became a cyborg. Since that day, the man's sole mission has been protecting humanity and justice from the threat of Shocker. His name is Takeshi Hongo, the first Kamen Rider. After a long battle overseas, Hongo hears a certain girl is in danger and immediately returns to Japan. He then meets Takeru Tenkuji, Kamen Rider Ghost, who had been investigating the girl's whereabouts. (imdb)

After sacrificing his life to protect his friends, Tenkuji Takeru thought he was dead for sure. Now, after being resurrected by a mystical hermit, Takeru has 99 days to fight as the masked phantom against the evil Ganma. Along his journey, Takeru must find eyeball-like devices called "Eyecons", which can unlock the spirits of history's famous men. (imdb)

Airi Nishina is a high school student. On the way home from school, Airi is kidnapped by someone. Then, nine more high school students are all kidnapped like Airi. Those kidnapped students are forced to participate in Jinroh Game, with their lives at stake.