How Does The Mermaid Saga Explore Themes Of Immortality?

This is a story between a bloodthirsty merman and a kind and naive researcher. Linda, a researcher at a Japanese maritime university, found herself raped by a lewd merman in a dream. This tempted her to conduct research on this mythical creature. Together with her professor Gary, they set off to sea in search of merfolk. They successfully caught a merman, but Linda was marked as its mate…Was it a human that had caught a merman, or was it a merman who had found its prey?

Chloe is a scientist with a secret, she is a mermaid...without a mermaid, or so she thinks. She is a hybrid, half human and half mermaid whose father is disgusted and left her mother when he found out she was pregnant. With the help of her best friend Kari, who finds out she is Royalty in the Werewolf Kingdom, she finds herself fitting in with the Werewolves when the King of the Sea finds her. He is disgusted with her father for abandoning her and pulls her into their world along with her werewolf mate but she finds out that she is special and she is hunted for her mermaids scales

Charlie is a member of Black Diamonds, they hunt for these inhuman beings called mermaid. When the ship is attack one night, Charlie is pulled into a whole new world under the sea.

To save the merfolk from slaughter, I seduced the vampire lord himself-Lazarus. He still loved me after all. For three days and three nights, he drowned himself in my body, unwilling to let me out of his arms for even a second. I roused from the haze of fleeting bliss, only to have a searing, corrosive liquid poured mercilessly over my head. "You with eternal healing can taste the sting of agony？" "Yet your trivial suffering pales in comparison to the loss of my kin you brought upon me. It is nothing at all!" "This is merely the beginning. Refuse to reveal where my parents lie hidden, and you shall never break free from this castle." He was convinced that I alone had destroyed everything he held dear. Holding the entire merfolk’s lives hostage, he confined me within the castle. Time and again, he tore open my chest by force, wrenching out my pearl of the mer, feeding its essence to Isolde to mend her frail flesh. He condemned me to sleepless nights, forcing me to cleanse the filth he left behind. Barefoot, I was made to dance the mermaid’s lament upon razor-sharp silver blades, writhing in pain to lull Isolde into slumber. Later, Isolde feigned a pregnancy. Driven by false tenderness for her, Lazarus took to slicing chunks of my immortal mermaid flesh with cold blades, brewing them into nourishing potions for her. Hatred for me burned deep in his bones, yet whenever I was on the brink of death, he would still force his own blood down my throat to keep me alive. "You presume too much on my lingering love for you, choosing silence over the truth, do you not? Aurora… tell me, what became of my parents?" I endured in silence, bearing witness to his love torn between hatred and longing. Soon, I would no longer need to guard that fatal secret. For a mermaid who dwells on land for three years shall wither and perish, severed from the sea that gives her life. Only three days remained until my final breath.

In my previous life, my sister set her sights on the formidable river dragon and married him without hesitation. I chose the unassuming merman. She thought she would ascend as the queen of the dragon clan. However, when the river dragon failed his ascension trial, my sister, as his mate, was caught in the fallout and narrowly escaped death. Meanwhile, the merman unexpectedly inherited the Sea God’s Legacy and rose to become ocean royalty. Everyone knew I was to become the empress. At the celebratory banquet, my sister poisoned my wine. Reborn into a new life, my sister rushed toward the merman and chose him, saying, “The empress’ throne will be mine!” Little did she know that the merfolk’s true nature was cruel, finding pleasure in tormenting others.

Once upon a time, in a land hidden where immortals exist, Alessia Condor was killed as Lady Elena, the woman destined to marry the king of Valeria. Reincarnated in modern Philippines, Alessia finds herself again in the world she doesn't belong in--or so she thinks. *** Alessia was applying for a job when she drowns with her sister and wakes up in a strange land where immortality, demons, and monsters exist. To protect herself, Alessia disguises as the boy Ales, who later becomes Elijah Rafael El Valeria's royal doctor-the more than four thousand year-old king of Valeria, the first immortal. In her game of deception and lies, who is bound to lose-Elijah, who slowly falls in love with Ales, or Alessia, who can only watch while her sister, thought to be the reincarnation of Elena, gets married to Elijah to end the curse.