"But if that monster could be so easily killed, then based on the abilities of those Bat Monsters that first came through the Space Transmission Channel, it should have been possible to kill it without regard for casualties.
Moreover, what's crucial is that as is well-known, capturing alive normally costs much more than killing.
Yet even so, before the monster came to Blue Star, it had been trapped by layers of chains, indicating that the world on the other side had not found a way to kill the monster.
Although that head, which clearly had a will of its own, was unexpectedly sent into the Cave by Dong Tianyu and decomposed, Dong Tianyu still felt that something was amiss.
After all, if the monster could have been so easily killed, the opposition wouldn't go to the trouble of sending the monster to Blue Star.