Takuya joined Earth Academia six months ago to solve various problems on Earth. He was the first to meet Guru in the South American rainforest, he was also the first to gain a B-Commander & use his suit. A blood sample from Takuya was used by the evil sorcerer Jagul in the creation of his evil clone Shadow with the help of a kamikirimushi (long-horned beetle). Knowing that Shadow is a clone of himself, he loses his fighting spirit and leaves the front line from the feeling of self-responsibility that "the cause of Shadow is himself", but he regains his fighting spirit after realizing that he can end his fate with Shadow.

In Episode 45, Takuya lost his will to fight due to Shadow revealing that he is his clone in episode 43 but got back in the fight in Episode 47.

In Episode 51, Takuya made a final single combat with the Black Beet, and became a trade-off. Even though he died, he was given a life by Saint Papilia, who was impressed by his desire to prioritize many lives on Earth over himself, and achieved a resurrection.