Prologue 02: Of Men and Devils
"I am not sure why they decided to come to this world, but it looks like the people of your world harbor very strong memories of the past," Hana said as she looked through the windows showing a vast, desolate, and sandy landscape, "The Imagins that came here may be looking for means to go to your world's past and change something there to their advantage. If they can change your timeline, it might influence their own timeline."
"The Den-O Belt and Rider Pass lets Ryotaro fight as Den-O," Hana continued before she looked to the other Imagins with them in the train, "Those are Urataros, Kintaros, and Ryutaros, and they help Ryotaro fight other Imagins. Momotaros is currently possessing Ryotaro's body to pursue the Imagin to the past."
---On the day the devils appeared---
The young man that eventually became one of the volunteers was hanging out with some of his buddies at a park when they saw the sky grow dark and devils started landing on the ground and causing havoc. While the volunteer was running away, he suddenly stopped as generous amounts of sand started pouring out of his body and gather together to form the Bat Imagin.
The Imagin then proceeded to attack its surroundings indiscriminately, causing even more damage to buildings and nearby people. Its effect could be felt in the present - causing some people who should have survived the devil attacks to vanish and certain structures to become absent in the area.
The DenLiner arrived just in time to encounter the Imagin attacking its vicinity, with Den-O coming out to encounter him. The train stopped to allow Matsu and Hana to disembark at this point.