The Exchange Student

After the U.S.J. Incident, class 1-A is joined by two new students, Azalea and Mara. Azalea is joyful, energetic, and a bit reckless. She was also supposed to join the class earlier but was hospitalized for a while. Meanwhile, Mara is a mysterious, quiet, intimidating, and anti-social foreign exchange student who seems annoyed by everything and everyone. Azalea easily integrates herself with her class, but Mara avoids her classmates and many are even slightly afraid of her.
As time passes, she slowly opens up and reveals parts of her past as well as her dark family history and the possible real reason why she's there.