I'm really bad at summarizing stuff so I'll make this brief. Basically in in Academy City there exist a group known by both side of the city. no one knows who's in charge, how many people are part of it. This is just a story going into the lives of few of it's members they are known as the Dollars. (Hopefully this doesn't suck.)

An evil entity comes from the Void Multiverse had stolen Shizuo and Izaya's talents now they must journey their ways with a little cute monster name Saku to save the Multiverse and retry the lives of Shizuo and Izaya thru the adventures in the Dengeki Bunko Mutliverses also known as the Void Mutiverse or the Crossing Void Multiverse ( Crossing Void Verse).

The monster girl encyclopedia world is invaded by several heroes from such anime as a certain magical index(to aru majutsu no index), durarara!, Code geass, with characters Accelerator, Shizuo Hawajima, and more! Someone is gonna get punched really hard...

One-shot. Misaka almost gets killed by a flying vending machine - and when she meets the man who threw it, it's hard for her to contain her anger! Rated T for violence etc.