Humans have created a Wall of Severance to separate themselves from the bears, who grew violent and attacked humans after a far-off planet known as Kumalia exploded many years ago, turning into a meteor shower that fell upon earth. Two bears, Ginko Yurishiro and Lulu Yurigasaki, sneak through the Wall of Severance and disguise themselves as humans, enrolling in Arashigaoka Academy and taking an interest in Kureha Tsubaki, a human girl who despises bears.
Episode 1
Kureha Tsubaki is a happy high school student in requited love until one day, bears suddenly start terrorizing the school, two mysterious transfer students appear, tragedy strikes, and things get... well, weird.
Episode 2
Kureha's not interested in going back to school, but not everyone is taking no for an answer. Will she come willingly, or will it take a home invasion, gunfire, and a direct challenge from the Wall?
Episode 3
Kureha's classmates hold a terrible ceremony.
Episode 4
The Severance Court has the day off, so Life Sexy takes the opportunity to relate a fairy tale - about a young princess named Lulu, who gave up on kisses.
Episode 5
Kureha's class apologizes for the Invisible Storm and offers to make it up to her. Meanwhile, we learn a little more about Ginko's past.
Episode 6
Once upon a time, the worlds were divided in two by the sky.
Episode 7
As Ginko struggles to recover, Kureha realizes that she's forgotten a very dear friend for a very long time.
Episode 8
20 years ago, Yurika, revealed to be a bear, was taken in as a cub by a woman, who she ended up killing when she tried to leave her. Having lived alone at Arashigaoka Academy, Yurika was eventually befriended by Reia, becoming close to her and giving her a pendant as a sign of her love. However, she felt betrayed when Reia eventually gave birth to Kureha, and a few years later, Yurika killed Reia after she gave her pendant to Ginko. Back in the present, Kureha, who had heard Reia's pendant was taken by the bear who killed her, is shocked to find Ginko wearing it. The next day, Yurika reveals to Kureha that Ginko and Lulu are bears, claiming they were the ones who killed Reia. Later, the Judgemens call Kureha, Ginko, and Yurika to the rooftop, where Yurika tries to coerce Kureha into killing Ginko, who denies killing Reia but is willing to be shot if it will satisfy her. Just as Kureha is about to let down her aim, thinking about all the things Ginko has done for her, Lulu appears and tells Kureha about the crime that Ginko had committed concerning Sumika, prompting her to take aim again.
Episode 9
Ginko sees desire's true face, and Kureha longs to see Ginko's true face.
Episode 10
Now that Kureha knows the future her mother envisioned for her, she has to make some tough choices about what friendship means.
Episode 11
Chouko and her classmates have come up with a plan to eliminate their bear problem, but it involves a little sacrifice.
Episode 12
When yuri meets bear, a storm begins.
