[quote=@RiverMaiden]
[@KoL]
Is the behemoth literally in-between Mary+Boulder and the Baby+Mercury Ball?
[/quote]

It's, just as I described.
[hr]
Attention, everyone, I provided a chance for your characters to show off a bit and do their jobs as Song Knights. How can you don't know what to do with the monster? Just kill it!

The fight is there to avoid the nearly unavoidable fate of Mary and foreshadow the villains who'll be doing villainous things a bit further in the story.

Take this chance for some action and run with it!