MTL - Tokyo Literature and Art Times - Chapter 18 It's called Sakai Spring.

Being reborn into the Naruto world should be a joyful thing for anime nerds, but goose, what’s the trouble with being reborn to the newly born Naruto Uzumaki! And he’s still his naughty Naruto! To put it simply, it is a normal person who transmigrated into Naruto Niang, who was forcibly broken by the people of Konoha Village into a black deep cripple (fog) betrayal.

Tag: Transform into Lily Naruto

- Description from novelbuddy

His friend and his wife betrayed him. The only thing left to him was his massive debt and his precious daughter. He was without hope as he lived at the bottom. However, a last chance had come to Sungyoon. He was a ‘man without a heartbeat’, and he will explore the Moon’s Labyrinth. He’ll explore the parts of the dungeon yet to be seen!

Florentia was reincarnated as the illegitimate child of the richest family in the empire.

I am the sword.
Killing a man amidst a thousand miles, no one dares take ten steps.
Killing a man amidst a thousand miles, no one can take ten steps.
Killing a man amidst a thousand miles, ten steps? Not possible!
I am the sword, the sword is me,
On the path towards heaven, each shall wield their own.