Endride

Endride (エンドライド, Endoraido) is a Japanese multimedia project that features an anime with the same name and a smartphone game named Endride: X Fragments (エンドライド ～X fragments～, Endoraido: Kurosu Furagumentsu). The project features the original character designs of Kazushi Hagiwara and Nobuhiro Watsuki. The anime television series by Brain's Base, directed by Keiji Gotoh and written by Tōko Machida aired from April 2, 2016[a] to September 24, 2016. The smartphone game was released in November 24, 2016.[2][3][4]

Plot
Shun Asanaga is a 15-year-old junior high school student with an optimistic and bright personality. One day, he finds a mysterious crystal in his father's office, who is a scientist and businessman. When Shun touches it, the world becomes distorted, and he is sent into the world of Endra. Emilio, a prince of the kingdom of Endra, is nearing his 16th birthday and despises the reigning king, Delzain. Since Emilio is now at the age when he can inherit the throne, he takes up a weapon and attempts revenge. However, because Emilio is too weak, he is captured by Delzain and put in prison. When Emilio is in grief, the wall of his cell becomes distorted and Shun appears from there with two goals: return to his own world, and complete Emilio's revenge. What future lies ahead for the two boys trying to survive in Endra, yet raised in two different worlds?

Other Sources

 * {{MAL link|32608|Endride}