Team 2 put on a brave fight, but at the end Kerria alone was able to finish the job:

[Chat Chit] DMM FKG-wave-1-kerria-final-blow.png

The sole survivor then went on to face the boss:

[Chat Chit] DMM FKG-nushi-lone-survivor.png

She managed to do a great job, evading and getting skill attacks until the boss was down to nearly 2/3rd of its health. Team 3 then took over:

[Chat Chit] DMM FKG-nushi-sacrificial-lambs.png

They got one hit in before being wiped out, except Usagigiku, who managed to evade a couple of rounds. Now it was all up to team 4:

[Chat Chit] DMM FKG-nushi-final-showdown.png

Thanks to Kerria's groundwork, the first shot managed to take the boss down to maybe 1/3 of health and Apricot's barrier gave them a chance to finish it off.

And voilà:

[Chat Chit] DMM FKG-missions.png

Still left to do:
Get superampules out of the bond crystal shop.
Get superampules and equipment out of the whaleship shop.
Get flower gems for events 1-98 and get Rainbow Rose and Asian Rice when they are added to permanent reprints.
Nushi missions.
Prison island.
Defeat the Scene 3 mission and the Sage Laeva mission.
Upgrade and evolve flower memories (the rainbow ones look like they will take a loooong time though).
Fully upgrade team 1 (weakness crit) and try to put together a decent team 2.