A copy of the shop opens up and outcompetes them!
Clearly the appropriate response is to challenge the owner to an idol contest.
Singing the OP doesn't really work, because it isn't sung. Or maybe that's good?
Their enemy fades away with vague words of wisdom.
Season two opens, like so:
While adventuring for reagents, a mysterious talking armor falls from the sky. After calling everyone in the store a pervert, she makes her home on Lilietta's head.
They name her Mamori.