峰子と魔王 ～異世界転移の若返り最強婆さん、最弱魔王と世直しする～

A tale of a rejuvenated strongest granny & a powerless weakest Demon Lord fighting to reclaim the throne! The Demon Lord Maurishtora is betrayed in a coup, losing the throne to his own subordinates and barely escaping with his life. In desperation, he invokes a forbidden royal spell to summon a “loyal knight” from another world… but what appears is none other than Mineko, an 80-year-old granny on her way to a fall foliage bus tour!? Thus begins the outrageous story of a spry old lady turned mighty warrior and a down-and-out Demon Lord striving to seize back the throne!