Which is where I will explain how we came by invisible ink

This is a very magical ink. It's nothing like the ink we get at the shop of old Scroons in town, like that one time when Longfellow needed to be taught a lesson and we got the blue ink and put it in her shower tap and then pretended to be asleep and giggled under our blankets when she started howling at the mirror.
This ink is different. It came from a great adventure and I will write all about it another time because I just realized I was late for choir and I'm already in too much trouble and they already know I fake throwing up in kitchen duty.