I thought they had already been scouted and asked to join by one of the opposing forces. Seriously they need all the help they can get against the North.
Led by #01
Minato's harem of 4 single digits, 5 if you count #8 inside Musubi
Seo and electro-S&M-tans
If Miya wanted she could fucking steamroll the east, west, and south, perhaps even MBI.