Watch Monster Strike 3: The Fading Cosmos Online

Ren Homura has just moved back to his hometown of Kaminohara, but he is not able to remember much about the time he spent there other than vague flashbacks. When he retrieves his cell phone which he had sent to a shop for repairs, he finds that a mysterious game titled "Monster Strike" has been installed on it. Unaware of its purpose or how it got there, Ren decides to open it, an action that will change his life forever as he finds himself suddenly attacked by a strange man. Now trapped on the roof of his school which strangely has been designated as a "stage," Ren is shocked to see the man summon a realistic monster from the game, one that is more than capable of inflicting damage on a human. His only chance of getting out of this situation alive is by summoning the dragon Oragon, who tells Ren that he will crush the opposing monster for him. Unfortunately, it turns out that Oragon is a tiny dragon that is completely useless!

Second season of Monster Strike, animated entirely in CG. A transfer student from America, Mana Livingston, becomes friends with the main cast and learns about the Monster Strike game, even obtaining her own ring and partner. Together everyone helps solve crises involving the energy points that draw monsters in random areas of Japan. By sealing them the monsters will stop being drawn to them. But Madarame, a CEO who reaches out to the children, is not telling them the whole truth.

The Angelic Guard, who call the heavens their home, have been tasked with collecting the orbs scattered across the world. Lucifer—a leader of the Angelic Guard with a rebellious streak, said to wield power rivaling the Almighty—carries out her duty along with Uriel, also a leader of the guard. Together, they go about executing their mission, until Holy Magistrate Keter—the one who leads the heavens under the Almighty's will—tells Uriel of Lucifer's planned rebellion. Initially in disbelief, Uriel then learns that the accusations against Lucifer may be connected to an event that once threatened to shatter the heavens.

Second Part to Monsuto Anime, it is not animated in full CG like its predecessor. "When the red moon rises, the apocalypse shall visit the world..." After many monster battles, Ren and his friends finally set all of the energy points free. But immediately afterward, Nostradamus gave a prophecy warning of a bleak future, enveloping all who heard it in indescribable anxiety. As the gang mulls over the prophecy, Mana is still struggling to understand Miroku's declaration that she holds "the power to change the world." After watching her for some time, Walpurgis tells Mana a truth she had been hiding from her. Meanwhile, Madarame is preparing to announce a new project to the world. What are his plans? And what did Walpurgis tell Mana? Are Ren and his friends headed for the dark future in the prophecy? The story finally reaches its exciting climax! (Source: Crunchyroll)