The Beginning After the End manga has indeed finished. It provided a satisfying conclusion to the characters' arcs and the overall narrative. Maybe there'll be spin-offs or related projects in the future, but for now, the main story is complete.
I'm not sure specifically as I haven't read it. But it might be a story about new beginnings that follow an end, perhaps in a fictional world with its own set of characters, conflicts and resolutions.
It's a story full of magic, adventure and character growth. The main character experiences a new start in a different world and has to face various challenges and make choices along the way.