[Western Crossover] Another Bat-Super

The fourth-ranked Self-Destruction System has finally been kicked away by its Host. The sniveling Self-Destruction System clings to the Main System's leg and refuses to let go, begging to be allowed to choose a new Host. And that new Host...

The Main System thinks this System is really giving him a headache. It actually wants the Master to be its Host! But isn't your first requirement a female Host?

Theme: Transmigrate through various parallel timelines and see other worlds