People are wondering about who will Fight Dorry/Brogy & Giants among SHs & who will stop Imu/Gunko ... etc
But missing the Plot Twist that Oda could be going for here,
"Imu is here asking for People to help her save her Kingdom",
The way i see it tbh, it's SHs job to answer such cry for Help,
They are the Military Force that Imu desperately needs right now, just like every Arc before,