Natsu "magically" gets sent to the world of Akame ga kill, during the fight against Tartaros. Natsu absorbs etherion and gains the ability to cast air, ice, and metal dragon slaying magic. Natsu must learn how to kill and eventually accept his destiny and kill Zeref and avenge Igneel by slaying the Dragon King Acnol...
"𝐄𝐯𝐢𝐥, 𝐈'𝐯𝐞 𝐜𝐨𝐦𝐞 𝐭𝐨 𝐭𝐞𝐥𝐥 𝐲𝐨𝐮 𝐭𝐡𝐚𝐭 𝐬𝐡𝐞'𝐬 𝐞𝐯𝐢𝐥, 𝐦𝐨𝐬𝐭 𝐝𝐞𝐟𝐢𝐧𝐢𝐭𝐞𝐥𝐲." (Animes: Fairy Tail and Rosario + Vampire) (Pairing: Natsu X Outer Moka) 𝐀𝐟𝐭𝐞𝐫 𝐛𝐞𝐢𝐧𝐠 𝐤𝐢𝐥𝐥𝐞𝐝, 𝐰𝐡𝐞𝐧 𝐭𝐡𝐞 𝐬𝐞𝐚𝐥 𝐛𝐫𝐞𝐚𝐤𝐬, 𝐎𝐮𝐭𝐞𝐫 𝐌𝐨𝐤𝐚 𝐚𝐰𝐚𝐤𝐞𝐧𝐬 𝐢𝐧 𝐚𝐧𝐨𝐭𝐡𝐞𝐫 𝐰𝐨𝐫...
What If After fighting Ikatsunagi. Natsu was sent to another world where empire is corrupted and ruled by young emperor and a corrupted prime Minister. How Natsu will come home? how he will survive in the land full of corrupted people?