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Wall Sina, Goodbye Annie Leonhart has a job to do—and a resulting absence that must stay off her record at all costs. With no one else to turn to, she asks her comrade Hitch Dreyse to cover for her. She agrees but puts forward a single condition: Annie must solve the fruitless missing person case Hitch was assigned. The case revolves around Carly Stratmann, a university graduate and the daughter of wealthy businessman Elliot Stratmann. With only a single day to solve the case and the underground of the Stohess District crawling with thugs, Annie must put her all into finding this girl. Yet, every answer she uncovers only leads to further questions—how has the illegal drug coderoin found its way to Stohess, what is Elliot hiding, and where has Carly disappeared to? Lost in the Cruel World With worry for Eren Yeager gripping her heart, Mikasa Ackerman begins to remember. She remembers her conversations with Armin Arlert, her concern for her friends, and most painfully, the time she had almost lost everything. As fear takes control, she begins to experience an alternate version of her past—some things can be changed, but are there events so inescapable that she can't even prevent them in her dreams? [Written by MAL Rewrite]

A special episode aired after ep. 490, it summarizes the history of confrontation with the black organization.

Although learning different languages continues to be an interest for Shinobu and her friends, the new school year brings unexpected difficulties. Not only is there always something new and different to distract them from their studies, but Alice and Yoko also are having trouble adjusting to being in a different class from Shinobu and Aya. Meanwhile, Karen isn't getting along at all with her new homeroom teacher, and it doesn't help that the teacher is having trouble figuring out how to make herself seem friendlier to her students as well. Craziness may ensue, but sometimes, all it takes is the right mutual experience to bring everyone together. While some of those experiences may not be as well-thought-out as others (like when Alice and Aya act like juvenile delinquents to seem more grown up), the gang's new adventures are certain to warm everyone's heart as the fun and friendships keep growing in HELLO!! KINMOZA! (Source: Sentai Filmworks)

While pursuing an alien fugitive, Birdy Cephon Altera—a bombastic police officer from the Space Federation—finds herself on Earth. Her target, Geega, has disguised himself as a human and assimilated into the fashion industry, so Birdy follows suit and joins a modeling agency, taking on the identity "Shion Arita." Her position as a rising model has her posing for photo shoots by day and chasing intergalactic criminals by night. Meanwhile, Tsutomu Senkawa, an average high school student, explores an abandoned building with his friend, and coincidentally, Birdy has tracked down Geega to the same building. Senkawa briefly witnesses the battle before being seized as a hostage by Geega. However, Birdy, oblivious, attacks Geega and accidentally kills Senkawa. Distraught, she quickly decides to save him by integrating his consciousness into her body. Now, Birdy and Senkawa must not only cohabitate the same body, but also balance Senkawa's high school life, Shion Arita's modeling career, and Birdy's increasingly dangerous job as a Federation officer. [Written by MAL Rewrite]