Starting School! Titan Junior High School

Nyūgaku! Kyojin Chūgakkō (入学！巨人中学校) is the 1st episode of the 1st season and the 1st episode overall of the Attack on Titan: Junior High anime, produced by Production I.G.

Overview
Eren and Mikasa leave for school, bumping into Sasha, Conny, Jean, Christa and Ymir along the way. Upon arrival, they accidentally wander into the Titan's side of the school, where they encounter peril in the form of a rain of titanic school supplies. They are rescued by Hannes, the school janitor, who takes them to the human side and upon the introduction of their teacher, Keith Shadies. At lunch time, the Titans arrive and begin to steal the student's lunches; Eren attempts to fight back by attacking the Colossal Titan, but instead falls from the rooftop and has his cheeseburger stolen.

Summary
The giant hand belonging to the Colossal Titan looms over a wall, with Eren Jaeger and his friends standing behind it in horror. The narrator explains that humanity received a grim reminder of living in fear of the Titans.

It is morning and Eren is woken up by Mikasa for his first day of school. Half-asleep, Eren mumbles that he feels like he's had a long dream. Mikasa points out that he's been drooling. Eren soon realizes that he's going to be late and screams in panic. Mikasa and him hastily run down to leave, but Eren stops to drink his milk, half-dressed in his uniform. Their mother wishes them a good day and smiles.

As he and Mikasa rush to school, Eren puts on the rest of his uniform. He orders Mikasa to not tell anyone about him drooling and she complies...that she won't tell anyone he wore his pants backwards. An embarrassed Eren runs ahead and pretends not to listen. Out of the blue, he crashes into Christa Lenz but quickly helps her up. She notices that she's dropped her breakfast and Ymir comes along and angrily splits them up. In apology Eren gives her money to buy new food and runs off. Ymir shouts angry slurs at them. Christa notices that he only gave her ten yen.

Next, Eren crashes into Sasha Braus, who is carrying a watermelon with her. She cries out but Eren gives her a token of his apology. She finds a small picture of Eren and Mikasa in her hand but demands he pay for her watermelon. Eren hopes that he doesn't run into anyone else but does so anyway. He bumps into Jean Kirschtein but ignores it by stepping over him. Mikasa dreams of a bumping encounter with Eren. With that in mind, she finds a different route and runs at top speed in high hopes to run into Eren. She crosses paths with Conny Springer and gets to Eren first. She accidentally collides with Eren too hard, sending him flying. Somehow, Eren falls right in front of Titan Junior High and everyone else runs up from behind.

The class bell rings and Eren runs the wrong way: to the Titan's side of the school. Eren finds his class 1-4, however Conny points out that the door is far too huge to open. Mikasa finds a smaller door, so they enter class 1-4. A life-size eraser hits Eren on the head as Sasha is uneasy about the classroom. Eren angrily carves his name in the eraser. Mikasa reiterates Sasha's words, but before he can speak up again a triangle ruler impales his head and he frantically runs around screaming. He soon acknowledges that he is being picked up by a Titan through the ruler in his head and slips off. The Titan also picks up the dropped eraser but notices Eren's carved name in it. In a fit of rage it hurls its giant stationery at them, which they dodge in panic. Jean trips over his own feet from running and tries to commit a perverse act (pulling down Christa's skirt), but instead pulls down Conny's pants and they start tumbling out of the classroom. Hannes the janitor finds them and the bunch are relieved.

Hannes laughs at their antics and points out their school building. In class 1-4, Keith Sadies welcomes them. After a short introduction, Sadies proposes the class introduce themselves to each other. Christa starts off and so does Ymir. Annie continues halfheartedly and Reiner Braun follows. Sadies goes to Conny, who salutes with the wrong hand. He gives Conny a noogie and moves on. It is soon Eren's turn and he passionately announces that he will drive out Titans from the entire world. Jean arrogantly calls Eren out and they soon start arguing, however Mikasa breaks up their fight and Jean instantly falls for her. Seeing as Mikasa and Eren already have a sort of relationship, Jean yells that he's jealous of Eren and their fight is stopped by Sadies.

Sasha is caught eating a rice ball in class and Sadies interrogates her. She claims that she elected to eat her rice ball since she couldn't have her watermelon. As an attempted act of kindness, she offers "half" of her rice ball to him. A while later Sasha is being served punishment but is stopped by the school announcement to meet up at the courtyard with lunch. Their headmaster, the Colossal Titan, kicks down the fifty-meter tall wall. The students run and scream in panic as their lunches are being taken. The Colossal Titan reaches for Eren, who decides to run up to the roof of a nearby building and steal cleaning supplies to retaliate. Despite the cheers of his classmates, Eren takes a high fall and his lunch is stolen nonetheless. The upperclassmen watch the first years from above.