The Dragon-Butchering Cleaver!

"Let's review what happened more than ten years ago.

"The Blood Demon Sector and the Heaven's Origin Sector discovered Boneyard, which is around ten thousand lightyears away, almost at the same time.

"Since Boneyard was the residence of 'Skeleton Dragon', an ancient ferocious demon from forty thousand years ago, the Blood Demon Sector had more information about it. I remember that the federation did not know the real name of the planet and called it 'Ultimacy' at that time.

"However, after the discovery of Boneyard, neither the Blood Demon Sector nor the Heaven's Origin Sector started the exploration immediately.

"It was because a distance of ten thousand lightyears was too vast. With the technologies of the Blood Demon Sector and the Heaven's Origin Sector, it was quite questionable whether or not the resources on the planet could be developed efficiently, if resources were detected at all.