The bear opens indeed
What They Say:
One day an asteroid hits the earth and makes all the bears on the planet attack humans. In response humans put up a giant wall and have managed to keep them out until a couple of them decide to disguise themselves as humans and sneak in. Two girls named, Kureha and Sumika are lovers and Kureha despises bears, but when Sumika disappears one day, Kureha has to come face to face with them in order to save her.