Same, I really didn't expect Tokio to be freed so soon. It seems that special ops with the Hirukos was done just the day before the bombs?
It's still not clear how Hirokos are made. Not from Tokio since those 'babies' they went to see where incubated before she got pregnant and maybe experimented on. They must be made with the crystal remnant left when one of the kids dies from the sickness with the bruises. That's the thing I'm confused on: given what Usagi told us, the process is automatic. Die with the sickness=turn into an Hiruko.
But that team really looked like designed for that mission they were sent on. Also, the doctors looked really disturbed by the first occurence of the sickness with Takao? So it didn't fit at first in their plans.