Hayato

Hayato (ハヤト) is a supporting character of The Promised Neverland. He is a two-year-old orphan from an unknown Factory Farm. He was shipped out to Lambda 7214 to experimented on. Hayato, along with his teammate Jin, are allies with "William Minerva", whom they greatly admire.

Appearance
Hayato is an average height boy with blonde-colored spiked hair and green eyes. In his first appearance, he is seen wearing a white headband, a black long-sleeved shirt under a orange-colored vest, orange pants, black gloves and black shoes. He has the build of a teenager as a result of the experiments performed on him.

Personality
Hayato is very cheerful, energetic and a bit jumpy, and often reacts as a normal person would in most situations. Despite his fearfulness, however, he's shown to be kind, loyal and trustworthy. This is shown when he helps Emma and Anna get Chris' medicine, and helps Ray fight the demons.

History
Hayato was born on October 10, 2045 at an unknown Factory Farm. At some point, he was shipped out to be a test subject at Λ7214, which is where he gained his unusual abilities. The drugs that were given to him seemed to have caused him rapidly grow and mature, much like Jin and Zazie. At some point in 2046, "Minerva" destroyed the facility and rescued all the children within, Hayato included. Thereafter, he was brought to the Paradise Hideout like everyone else, developed deep respect towards his savior, and began working under him.

King of Paradise Arc
Hayato is first seen struggling against a demon with Jin. Emma, Don, and Ray rescue them but are suspicious of them. Hayato gets on his knees and while crying, thanking them for saving his life. Then after seeing Emma's number, he informs the group that they were sent by William Minerva, who was worried about them after hearing about the raid on the shelter to find out if they were alright. He reveals that Minerva had saved them from a farm (possibly the same experimental plant Adam was from) and tells them that they'll lead the way back to their base.

However, Chris' condition suddenly worsens luckily Hayato knows a way to sneak into a nearby farm to steal some medicine. He then goes with Ray, Emma, and Anna to retrieve the medicine. After sneaking in but almost immediately getting spotted Hayato helps Ray run the demons around while Emma and Anna get the medicine. He's next seen after Zazie saves Emma from demons telling Zazie to not attack Emma since she's their friend. He then explains that Zazie must have come because he and Jin took too long.

Human World Arc
Upon arriving in the Human World, Hayato is seen to be visibly worried and shocked about Emma's disappearance. Hayato, along with the other children, agrees to search for Emma so they can reunite with her again. Over the next two years spent in the Human World, Hayato began attending school. During spring 2049, he finally reunites with Emma again and cries tears of joy, even though she lost her memories.

Norman
Hayato was rescued by "Minerva" along with hundreds of other children. He has a great deal of respect for "Minerva", even comparing him to a god.

Jin
Hayato is good friends with Jin, and they are often seen by one another's side. They try to help each other out when they are in danger.

Emma and Ray
Hayato looks up to Emma and Ray and is confident in their abilities. He is also grateful towards them for saving him and Jin in their first meetings.

Speed
Despite being physically weaker than his allies, Hayato has super speed and can run in such manners that no normal human can. This is revealed to be something he got from being experimented in Λ7214.

Trivia

 * Hayato is one of nine characters in The Promised Neverland series who has an Asian name with the others being Hao, Yugo, Hana, Yukko, Damdin, Naila, Ayshe and Jin.
 * The name "Hayato" means "fast person", "speed" and "brave".
 * Hayato's favorite food is potato salad.
 * Hayato and Jin share the same birthday and were mostly likely born at the same Factory Farm.