MTL - Light Spirit Epic - ~ Part II: Race (2) Mermaid / Succubus

One day, Luo Jian woke up from his sleep and found himself in a locked chamber where the door and window were all sealed. A note with a few lines written on it was tacked to the wall: “Escape from this room within an hour, otherwise, you will die.”

There is a sequel called Reincarnation Night (轮回之夜) that takes place in the same universe but has different main characters

- Description from Novelupdates

Xue Xi is forced to fall in love at first sight with this dangerous man on their first meeting. With death being the only other option, she makes the first move:

To save the masses, Zhong Nianyao sacrifices herself to the heavens, thinking she would vanish into thin air. Surprisingly, when she opens her eyes again, she finds herself as the youngest daughter of the Zhong family in the imperial capital. In her previous life, as the national advisor of the Li Country, she spent her days in deep contemplation and eventually sacrificed herself for the people. Given a chance to relive her life, she decides to live freely and with ease. Zhong Nianyao, known in the capital as the infamous useless heiress who excels only in spending money, has been famously infatuated with the eldest young master of the Li family, Li Jingming. She even jumped into a river just on his saying. Later, to everyone's astonishment, Zhong Nianyao changed; she stopped chasing after Li Jingming and started setting up a stall on the overpass. People then said she must have gone mad. However, as time goes by—A real estate tycoon holds a black card, pleading for her to tell his fortune.A famous movie star clings desperately to her, crying for help.Even a renowned old artist brings his works to her, asking for feng shui advice.Zhong Nianyao didn't expect that just returning to her old profession would turn her into a master. She had always intended to keep a low profile! As she ponders this mystery, a man with a devilishly handsome face suddenly hugs her from behind, his deep voice filled with a seductive charm, 'My lady, when shall we start planning for a child?' Zhong Nianyao glances at the man and retorts with a single word— 'Scram—'(Sickly possessive lord VS Cunning heiress, pure love, those who like it, dive in!!)

For decades, the brave warriors of the Northern Army fought to keep the world safe from the evil Silent Night. But when the fourth-generation leader, Jin Kwan-Ho is accused of colluding with the enemy, he is forced to disband the sect and commit suicide to protect his son, Jin Mu-Won. With no family and allies left, Mu-Won leads a dreary life under close surveillance… until a surprise attack from the Silent Night gives him a chance to escape to the mountains.

There, the young warrior trains to master the fighting techniques of his predecessors, before the mysterious disappearance of a loved one brings him back to the mainland. Follow Jin Mu-Won as he embarks on a journey to avenge his father’s death and take down the villains who threaten to plunge the world into darkness!