In a World of High Martial Arts, I Became Invincible After Playing Tsunade

[System + no male lead + invincible + high-martial-arts world]

After transmigrating into a high-martial-arts world, she becomes a student about to start high school.

She thought her life would pass by uneventfully, but then she unexpectedly awakened a System.

From then on, a woman who often showed up at casinos but never won appeared in the world.

Everyone called her a walking jackpot. But one day, when the gods invaded this world...

“From this moment on, bet your life.”