The Last Incubus with The Vice and Valor System - Chapter 166 soon

Kaito Nakamura, a shy university nerd, thought he’d found love when the stunning Aiko chose him as her boyfriend. Their sweet, fluffy romance fills his lonely world with hope—until he discovers she’s cheating on him with multiple guys, reveling in the taboo thrill of betraying someone so innocent. Heartbroken and humiliated as explicit photos of her circulate online, Kaito’s tears are interrupted by a mysterious popup: the “Revenge NTR System Beta.” Promising retribution but with a chilling condition — he can’t break up with her.Contains Ntr, read at your own risk

“According to prophecy and scientific calculations, the entire world will see temperatures drop to minus forty degrees within three years, and even the earth's core will be frozen within three hundred years.”“What should we do?”“Gather all our strength, build a shelter together with unwavering unity. In the face of disaster, we must stand united, and everyone needs to do whatever they can to ensure a future for humanity!”“But what if someone refuses to work and just wants to eat and be lazy?”“Then let them die! Activate the alchemy golems and large robots, we do not support idlers!”Set in a scenario similar to Frostpunk, with fantasy elements and a steampunk background, viewer discretion is advised.

The Empress who dies in torture, An Rushuang is her name. After she wakes up, she finds herself has time-travelled to when she was twelve years old, but she would turn into Major General’s white horse at night. He is a general who orders about the winds and clouds on the battlefield, and she is a little girl lives in her boudoir seclusively.
She endeavors to change her fate, and he spared no effort to win every battle. They meet each other every day, well, it’s night to be accurate. Is that a dream or not? She pleads to marry the seignior to win peace for her family, only to find he is the one she is going to marry.
“Growing old with you under the same roof is my long-cherished wish”, thought them both.

- Description from Novelupdates