World Isekai - Chapter 71 : [Speed Things Up]

This is a story of Xia An, a transmigrator from the end of the world, who transmigrates into the body of a cannon fodder who was the mother of the villain.

- Description from Wattpad

The first time he saw this woman, she was holding on the arm of an old man who looks like he’s about to enter the grave at any moment and smiling like a blooming flower;the second time he came across her, she was wearing a nurse’s uniform and flirting with a man; the third time that they met again, she appeared before him, as his blind date! Guan Ling Chao, the current prince (young master), an outstanding army officer, due to his family’s (elders’) threats to forced marriage, had no choice but to go on blind dates. Yet after meeting hundreds of different women, she was the only woman in the action group

- Description from Novelupdates

Earth is dying. The sun is expanding at an uncontrollable rate, but Theo Spencer is alright with this. He's led a deplorable life. When the end comes, a mysterious entity grants him the gift of reincarnation. The gift of a quiet life as an alchemist.

Theo awakens in a small town in the southern reaches of a small kingdom in a non-human body. Broken Tusk doesn't seem like much, but his legendary alchemy skills will soon turn their fortune.

Join Theo on his journey to turn the swamp-town of Broken Tusk into a prosperous trade town.

Allen, an eight-year-old boy from a poor family in the royal capital, is living a poor but happy life together with his mother. One day, however, memories of his previous life suddenly come back to him and he remembers that he is in an dating sim game and that the capital will be destroyed by war if he doesn’t do something about it. If this continues, both he and his mother will be killed! With a sense of urgency, he decides to rise to the occasion in order to save his precious mother’s life and save his favorite character, the villainous young lady Anastasia, the only girl he liked in the game, from her all too tragic and ruinous end. This is the story of a man who isn’t even a character in the game, but who strives with his steely determination and uses all the knowledge he has to turn overcome fate!