Toaru Majutsu no Index: New Testament - Volume 17, Prologue: Or the Assumptions Include the Conclusion - to_the_Girl’s_ABYSS.

Sumi has always despised the world she lives in—one filled with greed, deceit, and pain. Trapped in a miserable life with a dead-end job and mounting debt, she sees no escape. But when her lecherous boss crosses the line, Sumi reaches her breaking point. In a desperate act, she takes her own life—only to awaken in the darkness and found out that her wish has been granted she is no longer human she finds herself in the most unexpected form… a seed of a flower and she was in the world which she only knows in game and stories. a world where creature like demon, monster and things like magic and spells exist and she is going to live her second life… as a flower.

An accident gave Su Hao the ability to reincarnate infinitely.

But who can tell him why he can’t live past five years of age every time he is reincarnated?

The universe is dangerous and unfriendly to children.

Su Hao decided on his first small goal — to become an adult.

“How could I not even become an adult!”

…

Amidst Su Hao’s millions of reincarnations, one time after another. After obtaining enough knowledge, he discovered the way to become a god.

This is a mortal’s path to divinity. Maybe… you can too!

A story of time-travel. Sly and cunning, she unexpectedly became a sickly noble lady whose fiancé is merciless and demotes her to a lowly concubine. She sneers and bravely breaks off the engagement. To hell with scumbags, marry heirs to lords, blind the courts with her brilliance.

She was forced by her husband and his mistress to jump into the sea and commit suicide, only to be rescued and taken care of by the jerk's uncle for seven years.