Kyousuke Date comes home one night and finds his mother dying in a pool of her own blood. In her final moments, she stabs him in the chest. After a swift recovery, Kyousuke searches for answers regarding his mother's motives, but finds more than he bargained for when he is attacked by two rival organizations: the Hospital and the Kirihara Group. Kyousuke is surprised to discover that he has a twin sister named Runa, and both groups try to coerce information out of him about her despite his ignorance to her existence. As their assault continues, Kyousuke soon makes another discovery—he has the ability to transform into a terrifying mutant called SoulTaker. With these newfound powers, Kyousuke resolves to crush both organizations, uncover the truth behind his mother's actions, and protect Runa.

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)