The so-called jigsaw puzzle.
Is simply.
[Settlement][Dwarf Allies][Sufficient Strength].
This idea was ultimately confirmed when Kana saved Gray Furnace Castle, and all the Gray Mountain Dwarves joined the Night Watchmen at that moment.
After all, all the Dwarves suddenly joined the Night Watchmen under Kana's command, something Kana could not have foreseen.
There couldn't have been such a plot; Kana initially aimed to establish good relations with the Gray Mountain Dwarves, working out a way to deeply bind them with the Night Watchmen later on.
It was unexpected, however, that a crisis concerning the life and death of the Gray Mountain Dwarves would arise.
This led the Gray Mountain Dwarves to make a firm decision.
It was mentioned earlier that because of their brewing, the Dwarves have sufficient food supplies.
Coupled with the Half-Elf beginning to farm, sow, and gather food, the resources should last for a few months.