Apocalypse Shelter System - Chapter 19: The Rules of City of Darkness?

Transmigrated into the world of High School DxD, Roy believed he had been handed a life of luxury and glory. Born into the prestigious Lucifuge family, with his Sister Grayfia as his strict yet devoted older sister, he thought he was destined for greatness. 99,997… 99,998… 99,999… 100,000!!But... reality proved harsher: Roy lacked demonic talent and, despite years of training, remained a Low-Class Devil. his peers effortlessly achieve High-Class status, he’s been trapped in a cycle of endless sword practice and ridicule. Yet, he refused to accept mediocrity. Ten thousand sword swings a day, relentless training.. Until one day..[Ding! The Strongest Demon King System has been activated. Access functions to learn more.]---- High School DxD - Main World!1 - High School of the Dead [●] - First2 - Demon Slayer [●] - Second3 - Akame Ga Kill [●] - Third4 - Bladedance of Elementalers [●] - Fourth5 - Campione [●] - Fifth

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

What is the bright side?

The boundless shadow void.

Compared with the power of light that represents the order of the universe, the power of shadow that interacts with it will make people involuntarily have negative associations.

The Old Gods, the Lords of the Void, and… the unavoidable loss of control.

Is the power of shadow really difficult to break away from the control of the ancient gods and cannot be truly mastered by mortals?

The traverser Andrea has a different opinion on this.

Accidental crossing, came in Azeroth’s most dangerous period of the ancient war.

Andrea, who was blessed by the moon god Elune, had many questions about this world she thought she was very familiar with.

“Moon God” Elune, is it really just the Moon God?

Since she is not the Titan star soul that people imagined, what kind of existence is Elune?

Why did Tyrande gain the strange power of the so-called dark side of the moon when she sacrificed to Elune in the future?

“When your heart is toward the light, the shadows are silently looking back at you.” ——by Andrea Moon Shadow

- Description from novelbuddy

After a disaster, a despised son-in-law quietly undergoes a shocking transformation. With both medical and martial arts skills, a battle for redemption is on the brink of erupting...