Rimuru POV
I was taking a light stroll around tempest during my short amounts of free time before the next 500,000 years of paperwork after all it has been some 2 trillion years since I defeated Yuuki. Everything has become boring now, eating has been my only joy for the past 1.5 trillion years.
"Hey Ciel," I muttered under my breath ; while narrowly avoiding a shopping cart full of apples, grabbing one as I peacefully strolled through the Bustling markets of tempest.
[Hello master.] Ciel said in a monotone voice
"Do you have any ideas for something to do?"
[Master could go to another world with me.]
"Done that," I said biting off a chunk of the perfectly grown fruit.
[Calculating correct response, failed. Try again?]
"Uhhh.... su- Wait what?!" I said after realizing what she said.
[It was a joke,] Ciel said, as unfunnly as possible.
"Not a very funny one... But seriously what should I do?"
[Master should go alone while I do paperwork,] Ciel said seriously.
"But how should I notify them?" I asked.
[Already taken care of.]
"I knew I could trust you," I replied.
[Beginning reincarnation.]
"Wait, where am I going?" I asked.
Ciel invisibly smirks [Somewhere fun.]
3rd person POV
And just like that the strongest demon lord who had united the world vanished without a trace.
Thanks for reading I'm going to add more so don't worry!
(242 words)