Jahy-sama wa Kujikenai!

A high-ranking official in the Dark Realm, known as the Great Jahy, is both feared and respected for their imposing presence. After an encounter with a magical girl leads to the loss of a vital mana crystal, the Dark Realm collapses, and Jahy is sent to the human world, stripped of power. Now weakened and forced to live in a small, deteriorating apartment, Jahy struggles to rebuild the Dark Realm while dealing with the challenges of paying rent and maintaining employment.