MTL - Legend of the Asura - Chapter 5 Xuanyuan children (below)

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

When the admissions office of Witch Academy called, I was stunned—I had been accepted into a school I never imagined I could touch.Yes, I am a boy and it is an all-girls’ academy, but they did not mind, so I saw no reason to object. I had applied secretly, without telling my family, just to take a chance.But as soon as those striking seniors greeted us newcomers—pressing every boy against the wall with a knowing smile—I realized things were about to spin out of control.“Oh, come now, you sweet little freshman,” one of them said smoothly, her voice full of mischief. “Don’t make this difficult for me, your big sis. Swallow this core and transform into a witch like me, alright?”She held the glowing orb before us, half-threatening, half-teasing, almost inviting the new boys to react. It was clear she enjoyed it—the blend of fear and resistance in their expressions. Our unease seemed to be her personal amusement.After all, they only had this opportunity once a year.

“How did you board the Astral Express, walk the Path of the Stars?”“Because I ended the Honkai, altered everyone's fate.”“So your first step on this path was becoming a hero?”“No, it was for survival, searching for a thigh to cling to.”“And then?”Ryan adjusted his glasses, his voice resounding.“I became the thigh.”

Office worker Leon is reincarnated into a particularly punishing dating sim video game, where women reign supreme and only beautiful men have a seat at the table. But Leon has a secret weapon: he remembers everything from his past life, which includes a complete playthrough of the very game in which he is now trapped. Watch Leon spark a revolution to change this new world in order to fulfill his ultimate desire…of living a quiet, easy life in the countryside!