End of the World (2002)

Kazumi is at a punk concert and bumps into Yuko. Yuko is a girl from another dimension. Kazumi invites Yuko over to her apartment. There Yuko's robotic sidekick and stead Face comes from out of the t.v. The wall opens up and Yuko and Face enter into different dimension. Yuko seeks to kill the creator of the dimension to end the suffering of it's people. Yuko meets Kazumi, who claims not to be from Earth, at a rock concert, and they become instant friends. Yuko invites her new friend to come live with her. However, onces Kazumi gets to Yuko's apartment, she leaves through the wall with her trusty cybernetic steed and into another dimension to face evil.

Unfortunately the movie End of the World is not yet available on HBO Max.