I'm in Tiga, I'm a Kamen Rider

As soon as Dekisugi traveled to this world, he saw the newly established TPC and Soichiro Sawai, the director of TPC at the time, on TV. He had to confirm with some regret that this was Tiga's world. In order to survive in this world, Dekisugi had no choice but to study hard and successfully entered the TPC Scientific Research Center Bureau. To celebrate this achievement, he called his childhood friend—— Currently the youngest physics professor at the University of Tokyo: Nobita Nobi; Famous boxer and Japanese triathlon champion: Takeda Takeda; Well-known designer, famous product manager, and heir to the Onagawa Foundation: Onikawa Koo; And dance teacher and former ballet dancer: Shizuka Minamoto... "This is the one who co-wrote my Dekisugi!" Dekisugi was surprised, "But among these people... Is there something missing?" That day, the time machine brought a fat blue man and his golden finger, as well as enemies hidden in time! The enemies of mankind are not only monsters, but also these super-ancient humans with huge malicious intent! Dagu is the light, guarding the front of mankind, then I am the shield, guarding everything in the dark!