MTL - From the Void King To the Ghost Swordsman of the Light of the Beginning - Chapter 14 tower of despair

Xu Mo, a modern high school student was sent back in time to Jing Kingdom and found herself trapped inside of the body of a princess with the same name.

She had barely recovered when she learned of an unparalleled fiancé and in a daze, they got married. Then the stunning genius physician who normally does not pay attention clamoured to marry her. After that, there was a cold general, a flirtatious lord, a tsundere young master……

As it turns out, this was a male-dominated dynasty. Because the female population was sparse, the entire nation shared wives regardless of rank or nobility. Is it feasible for someone who wants to maintain monogamy in this dynasty?

- Description from Novelupdates

The main character is reborn as a character from a game he played in his previous life. This character falls into ruin along with the villainess, spending the last of their years together. A man named Kururi Helan.

She is the Crown Prince’s fiancee, but on the night of their wedding, an edict was made and she was given off to marry the crippled and paralyzed God of War.

[Mature Content]
'He was sin. A sin she was not supposed to commit to.'
—

The body of a mermaid is a vault of treasures. Their tears formed the most splendid of pearls, their exquisite blood a euphoric drug for vampires, their luscious hair woven into the finest of silk, and their tender meat sought after by werewolves more than Heaven’s ambrosia.

The creatures of night mingled within human society, fleeced in the wool of aristocracy, veiled in their portrayed innocence and nobility, their savagery continued to predate on the weak and powerless.

Genevieve Barlow, Eve for short, was an exceptionally strange young lady. She had an alluring and beguiling nature, where for her twenty-four year old self had barely changed in appearance since her eighteenth birthday. She had fooled the administration and had gotten a degree so that she could have a better life.

Most odd of all was that Eve had a secret she shared with no one.

She enters the house of Moriarty, not just to earn but also to find answers on what happened to her mother nearly two decades ago.

Unfortunately, things do not always proceed as one planned. Despite her cautious nature and desire to stay out of sight, a cold pair of eyes falls on her, that soon refuses to leave her out of sight.