manga/manhwa with hunter the regressed or something like that he pretended to be terrorist to get hunters in area that a dragon would destroy a city as no one believed him a high level hunter found out it was him as he helped with defeating that dragon it bit down on him and he almost died but he got stronger as he had a power that activates when injured badly he kills the dragon and a hero from another world was fused with dragon asked him to kill him
manga/manhwa with hunter the regressed or something like that he pretended to be terrorist to get hunters in area that a dragon would destroy a city as no one believed him a high level hunter found out it was him as he helped with defeating that dragon it bit down on him and he almost died but he got stronger as he had a power that activates when injured badly he kills the dragon and a hero from another world was fused with dragon asked him to kill him