What was that ending?

he was on his death bed. b/c the flow of time is different, ciel (the magician) needed to recreate some of the space/ experiences he had (? honestly not sure) but that’s what the last two chapters were. ash is actually ash and not a dream, she basically asks him to finally leave because he’s lived his full life now. so basically this chapter is of him finally leaving with her to her world.

In the novel it was ambiguous on Ash part but Sir Mio really dies. In his deathbed he remembers Ash.