Gremory Flaming Devil

Natsu had defeated the future rogue and the dragons return to the past. But Ancologia suddenly appear and is destroying the remaining of the capital. All hope was lost until Natsu protecting everyone but with the cost of his life. But got transport into a different world where he is found by Sirzech to become his younger brother and become one the Great Satan. OCC Natsu/Harem/Lemon