Thief Girl just met someone even more broken than her and she doesn’t have isekai knowledge cheat.

>12 yr old Great Saint
>Only level 13
>Has Perfect Refresh which means she refills both health and mana to full after every battle
>Has another skill that reduces all damage taken to at most 10% of her health
>Light Damage Absorption
>Dark Damage Nullification
>Has the strongest nuke spell that even at level 1 she was able to make it to floor 20 of the s rank abyss dungeon
>MC tricks her into wearing animal costumes just so she stops wearing her great saint robes that give her 350% boosted spell power because every dungeon was just her casting her nuke spell every minute