Aizawa Azusa, a corporate drone who died of exhaustion from overwork in her previous life, is reincarnated in another world, where she decides to live out a slow and uneventful life forever. But then, 300 years later, she discovers that the experience she earned by defeating slimes every day just to keep up her easy lifestyle has brought her to level 99 and made her the strongest in the world. The rumors begin to spread, and soon trouble comes knocking...
I'd like to cast away the vain notion 
that I am the strongest in Nanterre
أودّ التّخلّص من الفكرة العابثة 
،بأنّني الأقوى في نانتير
Meine eitle Vorstellung, ich wäre die
Stärkste in Nanterre, möchte ich abstreifen
Me olvidaré del título de la más fuerte
de Nanterre y empezaré de cero.
Me olvidaré del título de la más fuerte
de Nanterre y empezaré de cero.
Je ne suis plus
la plus forte de Nanterre.
Vorrei abbandonare la mia assurda convinzione 
di essere la più forte di Nanterre, e imparare da zero!
Quero abandonar a futilidade
de ser a mais forte de Nanterre
Хочу отречься от мысли,
будто я сильнейшая в Нантере,