Spirit Bullet: Neighboring World

Marco Mizayo, better known as Empty, is a memory of a young boy. He wakes up in the Neighboring World, where he encounters Itsuki Scott. To kill the mysterious Man, Scott leads Empty to a school. Several boys, known as quasi-spirits, gather together when arriving at the school. Now, A battle has begun falling into another world, Scott Itsuki takes an interest in a particular white cat. Much to Scott's disappointment, the two-part ways.

They are God or King. They are Spirit of the Emperor and live nowhere in multiverse space.

Scott later meets Marco Mizayo, a pink-haired quasi-spirit. Marco explains that they are at the center of a killing game between quasi-spirits. Within the Neighboring World, the spirits complete for a single wish to be granted to the lone survivor of the deathmatch.
Understanding the rules of the game, Scott and Marco reach a compromise on the alliance.

Nightmare, Marco, Commander, and Joshua's journey to Another World. Commander hates humans are doesn't trust anymore who are people are, Nightmare is friendly but something preys on someone. Marco like anyone, manage to fight the alliance journey, and Joshua uses Military weapon as magic, whenever fighting back & in self-defense.

This Spirit Bullet are the main characters, they are reborn as Spirit, the most powerful Angel & Demon are Brent and Scott. The entire universe rejoins the alliances of trustful and worth.

A powerful attack which calls upon a small blue orb, which then quickly flies forward and detonates a meter away from an opponent's body and causes a massive amount of damage. The user must be trained to use such a technique and requires a lot of mana. The orb is also homing in on the opponent, meaning if it passes by someone who is near the main target, they may be hit by fragments of the blast.

The Spirit Bullet will never end the Journey of the Universe. The parallel world is complicated & funny the first time seeing a new world.