Tokio is a junior high student living in the present time who is recruited to be a member of the 24th century's Space-Time Administration Bureau. Together with his partner Calen, their mission is to uncover the True History, the part of history that the textbooks doesn't tell. But in their way is the Akudama Trio that intends to prevent the True History from being revealed for their own personal gains. (Source: Wikipedia)

Bimajo, Tsubuyakky, and Suzukky work at the History Paradise Company, which publishes text books in the 24th century, and they're also the evil trio, Akudama, that gets in the way of JKK's investigation of history! After their last battle in history with JKK officers Tokio and Calen, they were on a long yet short time off (unpaid, of course), when they finally received a new assignment from their mysterious boss. The assignment... was to collect the mystical Dynamonds from famous people throughout history. Akudama starts hopping through time, as they're ordered, and try to get the Dynamonds from the various famous historical figures. The evil trio's revenge mission through time was about to start once again!! (Source: Crunchyroll)

Burning with ambitions to become the most beautiful woman, the most renowned scientist, and the greatest hero the world has ever known, three villains, Atasha, Sekobitchi and Duwarusuki, unite. The trio are Time Patrollers, the keepers and protectors of the annals of history. But, this is only a cover for the trio, as the villains are league with a nefarious leader, who is trying to alter the course of history to suit his desires, and, under his instructions, the trio travel in time with the aim of tampering with recorded history. Only Hikaru and Nana, disguised as the Otasukemen, stand between the villains and their goals. (Source: Wikipedia)

The story begins in the year of 20XX. Oshaka School in Kamakuland is a prestige school of the world where only those who are pure and clearheaded descendants of Priest Sanzo's clan may be admitted. As for the familiar villain trio, they are in firm belief that they are genuine descendants of Priest Sanzo's clan although actually they are of uncertain lineage. They study hard to enter the school in spite of their repeated failure. One day three intelligent children are called in by the principal and asked by Shakyamuni dwelling in his body to find missing puzzle copperplates scattered all over the world and complete the puzzle board to heighten honor of Oshaka School. The conversation, however, is overheard by the villain trio and they decide to forestall those selected youngsters. Then they happen to meet with a brilliant boy named koochan who appears handy and so they take him with them and attempt to take away puzzle copperplates from a goblin. At the same time they try to win the goblin over to their side and attack our heroes together. Being aware of the evil scheme, Koochan transforms himself into Itadakiman and fights bravely to drive the wicked trio away. (Source: Official site)