Episode 1: Little Garden

Little Garden is the first episode of the Hundred anime and it aired April 5, 2016.

Summary
Hayato Kisaragi is a student going to the Little Garden to go to school, where he is training to become a Slayer, human beings who can defeat monsters known as Savages, which are endangering the lives of other fellow human beings. As he exits from the plane, two girls from the school rush to meet him but he hides from them out of embarrassment. However, he later attracts attention at the school campus due to his high scores.

There, he meets fellow first-year students Fritz Granz, Latia Saint-Emilion, and Emile Crossfode. As Hayato begins to feel welcomed at the school, the two girls become late to the entrance ceremony as they were looking for him, and they are expelled then and thereby the Student Council President and the Captain of the Little Garden, Claire Harvey.

At this, Emile speaks up and rebuffs Claire, much to the anger of the Student Council Vice-Presidents Liddy Steinberg and Erica Candle. However, Claire turns to Hayato instead, who musters his courage and says that he feels that the students should not be expelled. Claire then challenges him to a one-on-one duel to determine the students' fates. After the entrance ceremony, Emile takes Hayato to see her friend, the technician of the Little Garden, Charlotte Dimandias.

At her lab, she reveals herself to also be the Chief Researcher on Hundreds, special gems that can grant powers to humans, turning them into Slayers. She gives Hayato his Hundred, which reacts to him almost immediately. Seeing this, Emile takes Hayato to the training grounds to train him for the upcoming duel. Later, he goes to put his luggage in his dormitory and accidentally spots Emile wearing nothing but a towel. He is then knocked out by him. He then learns that he and Emile are roommates.

Differences between the Light Novel and Anime

 * 1) In the light novel and manga, the polluted blood from the wound caused by the savage was a darker color, whereas, in the anime, it was the same fluorescent color as the Savage fluid.
 * 2) In the light novel and manga, Hayato was knocked unconscious by Emilia's bodyguard named Kilfelthar, in the anime, it skipped over the part where Hayato was knocked out.
 * 3) In the light novel and manga, Noah and Ryu were expelled due to being late after shopping for last minute things, whereas, in the anime, they were late after trying to pick up Hayato at the heliport.
 * 4) In the light novel and manga, Hayato found out that Emile was his childhood friend, Emilia Hermit after his match with Claire, whereas, in the anime, he found out during their fight on Zwei Island.