Visitor from the Other World

Short Summary
A border agent (Yūichi Jin) defeats a Bamster while Osamu Mikumo watches in awe. In Mikado City, Yūma Kuga is hit by a car, but remains unharmed and walks to school where he meets Osamu Mikumo. Osamu is immediately suspicious of Kuga, and decides to keep an eye on him. When they are confronted by some boys from class and taken to a Forbidden Zone, Osamu gets beaten trying to defend Kuga. A Bamster suddenly appears and grabs one of the bullies. Osamu resolves to save him and activates his Trigger, revealing he is a member of Border. He is took weak to defeat the Bamster, and Kuga suddenly decides to activate his Trigger and easily destroys the monster. Afterward, Osamu questions Kuga about his Trigger, and Kuga reveals he is not from this world.

Long Summary
A large monster is about to attack Osamu Mikumo, when an unknown Border agent suddenly appears and destroys it. He calls out to Osamu ("Megane-kun!") and asks if he's alright.

The history of Mikado City is narrated, where a gate between another world suddenly appeared four years ago. Monsters called Neighbors began to pour out and destroy the city. A mysterious group appeared and saved the city. This group created an organization called Border to defend the world using Neighbor technology.

At school, a group of bullies teases a boy in class, throwing his pencil case back and forth. Mikumo intervenes and returns the pencil case to its owner. He overhears some of his classmates talking about the new transfer student and is highly interested when they mention the new student might be a member of Border.

A commotion is heard on the street in Mikado City, where an young boy has just been hit by a car. The boy is completely unharmed, however, to the amazement of all the people surrounding him. When questioned about his address, a bean-shaped black mouthpiece appears inside of his collar and whispers the answer into his ear. Afterward Kuga walks down the street, talking to Replica, which has now taken the form of a rabbit-like black head, floating alongside him. Replica scolds Kuga for not being careful, and Kuga asks Replica if he can use his Trigger. Replica replies it is up to him and reminds him he is late.

At school, the students in Mikumo's class are taking turns reading. Kuga crouches behind the door of his classroom, but is discovered and brought inside to introduce himself. When the principal attempts to take his ring, Kuga refuses and starts to leave. Mikumo defends Kuga and says he must have a good reason for not taking it off. Kuga explains the ring was a gift from his parents. After a chilling stare from Kuga, the principal gives up, and the teacher tells Kuga to sit next to Mikumo. Other students begin to question Kuga about his hair, while Mikumo muses on his suspicious about Kuga being a part of Border, but figures he was wrong. The bullies from earlier throw crumpled paper at the back of Kuga's head, claiming it is a normal Japanese greeting. Kuga's pupils turn black, and he crumples the paper smaller and flicks it into the ringleader's forehead, knocking him over. Kuga claims he is returning the greeting, and Mikumo amazes at Kuga's fighting ability. Class starts again before the bullies can retaliate.

Mikumo decides to keep an eye on Kuga and asks if they can walk home together. He warns Kuga about embarrassing the bullies and predicts they will retaliate. Just then the bullies show up and demand that Kuga comes with them. Kuga readily agrees and starts to follow them. They tell Mikumo to leave, but he grabs one by the shoulder and demands they let Kuga go. In an abandoned lot, Mikumo is punched several times by the ringleader and challenges them to fight him one-on-one. Mikumo warns them about being in a Forbidden Zone and that a Neighbor could attack at any time. They continue to hurt Mikumo, but Kuga doesn't make any motion is help him, coldly refuses to help. The ringleader turns on Kuga, who easily blocks his attack and knocks him to the ground. Just as the whole group lunges to attack Kuga, warning sirens begin to sound, and a gate appears above their heads. At Border headquarters, Miwa Unit is sent to handle the situation. The bullies attempt to flee, but the ringleader is picked up by the large Neighbor that steps out of the gate. As he is dangling in the Neighbor's mouth, Kuga calmly suggests they leave. Mikumo says he has to save them. Kuga says they get what they deserve and asks why Mikumo wants to save them. Mikumo declares it's just what is right.

Mikumo activate his Trigger, Raygust, and transforms into a white Border outfit and his Trigger as a sword. He jumps up and strikes the Bamster, freeing the bullies. He is not strong enough, however, to pierce the Bamster's skin. Kuga again asks Replica if he can use his Trigger, and Replica again states it is Kuga's decision. Kuga activates Replica, which transforms into a black body suit as Kuga leaps through the air. He easily destroys the Bamster, to the amazement of Mikumo. After they both revert back to their school uniforms, Mikumo questions Kuga about his Trigger and asks if he is affiliated with Border. Kuga says he isn't a Border agent. Mikumo is confused, then, why Kuga has a Trigger. Kuga explains it was his father's, and he was told by his father to travel to Japan in the event of his death to find his friend who works at Border. Kuga explains his father has nothing to do with Border, either. Mikumo is even more confused, since only Border agents can have Trigger. Kuga says that rule only applies to "this world." He smiles as he explains that he came from across the gate and is what is called a Neighbor.

Adapted From

 * Chapter 1

Differences Between the Anime and Manga

 * In the original chapter, Chika had no appearance outside of a came on the double color page, while in this episode she was seen in her classroom.
 * In the original chapter, Masafumi and Kyōko did not appear.

Errors

 * In the preview for the next episode, Yōsuke Yoneya had dark brown hair instead of Black like in the manga. In the next episode, that was fixed.