I’m a Witch, So Why Can’t I Escape This Infinite Space?

Her innate ability is immortality: she is a witch who never ages or dies.

She has lived for thousands of years,

and mastered every skill,

yet she still can't escape this tiny infinite space!

Worst of all,

she's even been effortlessly toyed with by an ordinary human...

A lighthearted story about two top-level powerhouses teaming up to take down weak monsters: one with maxed-out brains and the other with maxed-out firepower.