∆lice's Sisters?!

*pulls out a gun* gun

*the three sisters burst into laughter* ∆lice: Oh honey, bullets won't work either! *grins wickedly* ∆udrey: *licks lips hungrily* Even better - you fight back! Makes it more fun to break you. *rushes forward with superhuman speed* ∆melia: Such adorable toys! *teleports behind Eight* Did you really think ordinary weapons could hurt demon princesses?

but an orbital railgun can