Which Characters In Castle Swimmer Webtoon Face The Toughest Challenges?

13 Iron Rules That Must Never Be Broken… Even If No One Knows Why. When Kawin and eleven others receive a mysterious black invitation, they are brought to a place called “The Forbidden Aquarium”—a facility that appears on no map. The doors are sealed. The rules are announced. And every violation… is paid with death. But the more they obey, the more they begin to lose themselves. And when the final rule declares: “Do not challenge the rules,” some begin to wonder— If we never defy them… how will we ever survive?

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.

When I learned that the villain was a merman who dropped pearls whenever he cried, I took out the discarded pregnancy test stick from the trash can and headed toward the rooftop. "Well, how many babies do you merfolk have in one pregnancy? Do they eat fish food or baby formula?" Theo Atwater, who was attempting suicide, slipped and almost fell from the 18th floor. I shook my head with a sigh. "Forget it. I'll just throw the baby into the sea after giving birth." Later, when the baby was born, Theo was too scared to sleep, fearing that I would release the baby into the sea. When the female lead, Melody Carlisle, and the male lead, Reagan York, were arguing and came to see us, he was looking at our baby’s swimming results and roaring, "You're one of us merfolk. How could you be afraid of water?"

"Master, do you miss this apprentice?" Lips painted in bright red ticked up in a sharp smile. Her eyes were a pool of dark red, like a swirl of the finest wine. One jaded hand in his throat, nails slightly digging in the skin there, the other was on his cheek carefully caressing. The clashing of both gestures were confusing, but Rion's mind only provided one instinctual response; to run away as far as possible. ----- Rion Ren, one of the strongest sword masters in the world, had to make a difficult decision to hand over his apprentice, Ruby, to the Demon Master when Ruby's real identity as a descendant of Demon Sovereign was revealed. Three years later, Ruby who had successfully taken the reign of the Demon Realm, came back to take revenge on her master that had betrayed and abandoned her in the hand of cruel demons. Rion swore on his life as a sword master, he only wanted to protect those who were precious to him, but how did it manage to turn the whole world into chaos? How would Rion face his own apprentice in a battle between life and death?!

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.

I accidentally recover my memories. I can't wait to tell my wife, Krystal Merrill, about the good news. But that's when I overhear her conversation with the doctor. "Ms. Merrill, are you sure you want to transform Mr. Stuart into a merman? That surgery only has a 0.01% survival rate. You've already mixed his family's ashes with his medication and made him swallow everything. Even if you're doing this to protect Theo, there's no need to go this far!" Krystal replies icily, "No way! Randy must become a merman! If not, what will happen to Theo? All Theo did was hit and kill Randy's parents by accident! I'm doing this just in case something happens to Theo! "Besides, once Randy becomes a merman, he will be able to fulfill the perverted clients' desires even more!" I can only tremble uncontrollably as I stand at the doorway. I can't believe that the woman I love the most is actually the culprit behind my parents' tragic death as well as my amnesia and disability. Since this is Krystal's choice, I should let her have her way, then.