From MC's Perspective:
Federation HQ,
Lowell's eyes flickered after hearing the familiar name Tier-4 Boundary. He soon connected the dots by comparing the recent behavior of the Supreme Elder of their McClain House.
The other hand, Federation Head Ben is seeing that Lowell is thinking seriously about it. At first, even he was suspicious.
Not many know about the deep secrets of the Tier-4 boundary. Among the Gold Mark Warriors there are very few who know about this secret.
That's why he was surprised by the Supreme Elder of the McClain House's boldness. In case something happens out there, then all the Silver Mark Warriors will be summoned.
The death rate is higher inside the Tier-4 Boundary. Not all of the Silver Mark Warriors can leave alive. So the Supreme Elder of the McClain House is betting on Lowell to permanently stay there.