Takashi Todoroki (manga)

Takashi is part of Yuma's circle of friends, with Kotori, Cathy and Tetsuo. When he heard the rumor that Yuma defeated Shark, he got surprised to hear it was true. He believed that Yuma must have a lot of hidden potential.

After Yuma's loss to Kaito Tenjo, Takashi, Tetsuo, Cathy, Kotori and Tokunosuke form the Numbers Club in order to help Yuma.

Later, The Numbers Club, together with Yuma and Astral, go to the Heartland Theme Park to find "Numbers".

After their escape from the park, Yuma and the members of the Numbers Club gather in Cathy's house. Tetsuo asks Cathy what she wanted to show them. She then presses a cat paw-like button, which opens a door leading to a big room, with many researchers and big computers. Cathy explains that as an apology for the trouble she caused, the Numbers Club's headquarters would be established there, where they can look up mysterious phenomenons happening throughout the world, and therefore, locate the "Numbers".

Yuma tells them that Astral told him that now he got three "Numbers", some of his memories have returned. Yuma asked what he remembered, and Astral says his enemy is Dr. Faker, who plans on using the hidden powers of the "Numbers" to destroy the Astral World; However, it is linked to this world. So, if the Astral World dies, this one will die as well. The Numbers Club then decides to save the world from Dr. Faker.