This has potential however rip author. Uke been adopted in order to avoid the other son in the familuy become hunter. Plot quite interesting as initially being a hunter rely solely on human strengths before it has been evolve by tech and human grow powers & system in order to be hunter. Uke actually died in the dungeon 10years ago but seme awakened and try to revive uke with the elixir that he got.
The Hunter's one night