With such an unusual ability, what kind of creature couldn't this captain kill?
Unless that creature also had the ability to manipulate time and space simultaneously.
After all, the captain's only offensive attack was the void attack, and if the target could also manipulate space, even if the time was chaotic and manipulated...
At least they could escape by hiding in the void or something. Some layers of void didn't have a concept of time, so it could be a way to escape.
But still, everyone existed in a certain space, and they were all influenced by time.
To be able to manipulate time...that's an ability that many people would fight for, and many would fear!
Are all Valkyries' captains like this?
If all Valkyries' captains could manipulate time like that, wouldn't the Valkyries already conquer all dimensions and worlds?
