Oh wow, just "little" action in this episode which is like the OVA because this is probably the "slice of life" part filler. So, we get to see mostly the main world characters and little glimpses of Black Rock Shooter. Basically, this is all character development and how Black Rock Shooter's other self develops the relationship between the people around her life. I'm just somewhat disappointed but it's okay. Overall, there is not much I can talk about besides drama.
Conclusion: Little action and a filler focusing on Black Rock Shooter's other self.