MTL - The Lady’s Sickly Husband - ~ 158 for the best treatment

“Now that I’m back, I won’t allow my loved ones to die again!”

The Shadow Labyrinth – the most catastrophic existence humanity has faced in history.

Desir Arman is one of the six remaining survivors of mankind.

The six attempted to clear the final level of the labyrinth but ultimately failed, and the world came to an end.

However – when Desir thought he would meet his demise, what is revealed before him is the world… thirteen years ago?!

Desir is returned to the past, back to the time when he enrolled at the nation’s finest magic academy – Havrion. He is reunited with his precious friends, and is prepared to change the past to save the world and his loved ones…!

Three years remaining before the emergence of the Shadow World!

Change the past and gather powerful comrades to save mankind!

Violet skies, a world undergoing massive changes, a deficient moon, interlinking voids…

Qiao Zhao married a first-class noble son from the capital, but unfortunately for her, she wasn’t given a bridal chamber as a sign of her newly married life.

After their marriage, her husband went on an expedition, leaving her alone to take care of herself. After a long time apart, they finally saw each other again, but suddenly, she was shot dead by her husband on the city wall with an arrow.

When she opened her eyes after a while, she saw herself in the body of a kidnapped young girl riding a donkey, racking her brains to figure out how to get back to the capital.

- Description from Novelupdates

King Grey has unrivaled strength, wealth, and prestige in a world governed by martial ability. However, solitude lingers closely behind those with great power. Beneath the glamorous exterior of a powerful king lurks the shell of man, devoid of purpose and will. 

Reincarnated into a new world filled with magic and monsters, the king has a second chance to relive his life. Correcting the mistakes of his past will not be his only challenge, however. Underneath the peace and prosperity of the new world is an undercurrent threatening to destroy everything he has worked for, questioning his role and reason for being born again.