3 pov 

fairy tail was at war with zeref and everything was bad zeref found out what natsu weakness was. and it was lucy *dramatic music in the background*  natsu looked at zeref "what do you want from me zeref i have nothing to give you" "turn into END ethrodus natsu dragneel that will save your friend" zeref had lucy by the neck and she shook her head no and mumbled "dont.....natsu.....dont...do...it"  natsu looked at her with a fear expression  and then zeref said "so now take your punishment for not following my words" zeref tighten his hold on her neck and choked her to death and she stopped moving then dropped her body like it was nothing to him "L-LUCY"!! natsu yelled and natsu then felt this undenying rage which did not feel good but good at the same time and then he felt different then he looked at him self and saw that he has transformed in to END zeref looked at him and smiled "NOW END KILL ME LIKE YOU WERE SUPPOSED TO" "ki...ll you des...troy" natsu looked at him with a wicked smile and said "with pleasurer big brother zeref" and zoomed to him and beat him senseless natsu got on top of him and looked at him with broken and angry face and then he heard a voice that said "n....o nastu" he knew lucy was dead he saw her stop moving he was going to do the final blow and he heard it again "natsu"  he growled and again was about do do the final blow until zeref said "how the **k* are you still alive " natsu/END growled and turned around and saw the blonde that was supposed to be dead and dropped zeref but still had his END form and the blond looked at him and smiled and said "dont do it natsu we have to find another way you will die if you kill him" he looked at her and his gazed harden and said "your dead he killed you i saw you die" he turned to zeref who looked scared himself and he looked at natsu and said "b-bro she is actually alive i thought i killed her i felt no pulse when i dropped her" he said stuttering then mavis came and said "i brought her back with fairy life (something i made up) now zeref i will end your life with out killing natsu" she did her thing (if you read the manga then you know what) after they vanished natsu looked at lucy and lucy looked at natsu and she said "natsu it m-" she got cut off by the boy who still had his wings and tail and horns and wrapped his tail,wings and and arms around her afraid to lose her again and she hugged back and she said "calm down i am here i am alive and kicking and what happened was not your fault so don't blame yourself i was the one who went out when i was suppose to stay back but i did not okay so don't blame yourself"  he hugged her tighter and started to cry and said stuttering "don't do that again luce not again you did it twice and your lucky you did not die those two times but this time you did so please don't do that again please" she nodded but said "i cant promise anything natsu its an instinct that makes my body move on its own like mr.cursey doll but i am not under that spell just an example" he nodded and he calmed down with his  wings going away also his tail and horns. but he got a new power that he may not use in a while 

after a year lucy published her book and nastu and lucy started a relationship and did more adventures with each other and also with team natsu with the S-rank mission they got accepted to do