So... what about the Behemoth FATE ?

[Jojoya]

The SB/ShB/EW rare FATEs are a lot easier than you'd think to spawn.
Because you need to spawn them manually.
Foxy Lady? 2 NPC FATEs which then spawn another FATE that will then spawn Foxy Lady in 5-30 minutes.

Just want to add that despite having 3 possible spawn locations, there's a place near Namai that will spawn the Namai Elder NPC if Foxy Lady has also spawned so you don't have to keep re-checking all 3 spawn locations. The Elder will share more of the lore about Tamamo-Gozen.

Tell me more about this glam?

It's a very big but somewhat generic looking DRK Weapon called Kidomaru. It's a reward for earning Gold on Curiosity Killed the Catfish.