Massive, massive spoilers. Do not read the answers that may pop up!!!!
In Fairy Tail (2014), Episode 10, Kagura unsheathes her sword and it apparently looks like she killed Erza. I have not been reading the manga lately and haven't read the latest chapter of fairy tail.
So does Erza die?
If you didn't understand from the screenshots, Kagura finds out that Simon died because of Erza's weakness. Kagura draws her sword, Erza says "sorry", and we hear her slash her sword and see the next scene where there is blood.