Women's World: I am the man with the most OP auxiliary class - Chapter 19: Letters Magic Name Net

She was an illegitimate daughter in a wealthy family, with a lowly status. By chance, she discovered that her ex-boyfriend had sold her out. In order to hide, she accidentally injured him and fled in a panic. From then on, they were bound by an inextricable bond...

(A truly satisfying power-fantasy novel, lighthearted and completely stress-free, with the only female lead being Tsunade.)Reborn into the world of Naruto, the protagonist embarks on his journey.He is determined to erase all regrets.So, he set a small personal goal for himself first—win over Tsunade!

This is a story about the protagonist getting the system, going crazy in the biochemical apocalypse, producing aircraft and tanks, destroying zombies, saving good people and killing bad people.

- Description from novelbuddy