The Britannian Empire was not having the best of times.
The inception of the Beast Incursion hit them like a meteorite.
They were closer to the Beast Domain than any other Sage-level powerhouse in existence, after all.
Not only that, but they had suffered an immense territorial breach and destruction of a part of their nation at the hands of the beasts and monsters. The Masters alone could not hold off the entirety of the onslaught, resulting in the death of many, many millions of innocent Britannian citizens.
It was a devastating wound that would undoubtedly scar the nation for all time to come.
It needed his help the most after the Sekigahara Confederate, even if it would, it was too proud to admit it.
RUMBLE
Heaven and earth quivered when he finally reached the Britannian Empire.
The very world seemed to bend under the weight of her being and existence.