i don’t remember the name help me

it was a manwha were the protagonist, a child girl, get reincarnated and knows the fate of the original mc (a male child). for more context the male child is some sort of mercenary and get written notes by the girl (she bought him) to help him on missions. i’m not exactly sure but i also think the girl has magical powers, and i remember one of the mission the boy went on, where the boy was fighting like fire beasts and he was about to die but he read the note she left him and managed to survive

i’m sorry i’m all over the place but i don’t remember much and i suck at writing

thanks in advance ⁄(⁄ ⁄·⁄ω⁄·⁄ ⁄)⁄