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 didn't even realize I'd learned 
this magic, but it's super handy.
لم أدرك حتّى أنّني تعلّمت 
.هذا السّحر، إنّه مفيد للغاية
Ich hab gar nicht mitbekommen, dass ich diese
Magie gelernt habe, aber sie ist echt praktisch.
En algún momento aprendí
este hechizo tan útil.
En algún momento aprendí
este hechizo tan útil.
Je suis contente d’avoir appris ce sort,
il est très pratique.
Non mi ero resa conto di aver appreso 
questa magia, però è molto utile.
Não faço ideia de quando aprendi
essa magia, mas ela é bem útil.
Я даже не знала, что выучила
эту магию, но польза от неё есть.