Which Demon Slayer OC Breathing Style Suits Water Users?

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?

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.

Hadden's sister had merely choked on some water at the pool while she was swimming, and for that, he shoved me into the pool after tying me up. He left me with only a small hole for air that was barely an inch. He said I would have to pay double for every grievance Julia suffered. I never learned how to swim. There was nothing I could do but try my best to breathe as I sobbed and begged him to let me out. Yet all I received was a lecture. "You'll never learn if I don't teach you a lesson now." I struggled to stay afloat, but… It took five days before Hadden's anger dissipated and he put me out of my misery, but it was already too late. "I'll let you go this time, but you'd better not make the same mistake again!" I had already drowned to death.

I am the youngest daughter of the King of the Sea, the most beloved little mermaid princess. The man I married is the world's most brilliant marine biologist. He has a childhood sweetheart who grew up with him, a woman who knows everything about extracting ocean toxins. The two of them, her brewing poisons and him developing antidotes, spent over a decade happily doing research together. Until the day she injected that toxin into my body. I nearly died. When I came to, he was sitting at my bedside writing up a treatment plan. "Don't be mad at Vicky," he said, still writing, his voice impossibly gentle. "She's just immature. She didn't mean to hurt you." "She knows I can save you. She just wanted to get a rise out of me." The moment those words left his mouth, one of Vicky's people came to call for him. After he left, I looked down at the treatment plan. He had left out one key ingredient. He'd been in too much of a hurry. He hadn't even noticed. That was when the sprite, silent for so long, finally stirred. The glowing pearl that had traveled with me for over twenty years drifted out from my collar, floating lazily in a slow circle. "Your Highness, once your human-form energy is depleted on land, your soul will return to the sea, and you'll never be able to come ashore again. This treatment plan is missing deep-sea spirulina extract. Following it will drain your energy even faster. The choice is yours." I stared at that line for a long time. Then I passed the treatment plan to the caretaker and smiled. "Let's go with this."

Despite me being three months pregnant, my husband asked me to jump into the water to help his first love look for her necklace. I teared up and begged my husband not to make me do this . Yet his friends all criticized me. “He’s just asking you to jump into the water. You’re the only one who can swim here. Nothing will go wrong if you’re only in for a little while.” “Minerva, that’s the memento Violet’s mother left for her.” I tried to keep fighting against it and grabbed the hem of Shaun’s shirt. But he shoved me into the sea. I struggled against the water as I hoped to see any hint of pity in Shaun’s eyes. Yet he said, “Minerva, you’re an excellent swimmer. You’ll be fine.”

Ito Akihiko the main protagonist also called as the 'cursed child' due to a past incident has the ability to see spirits from birth. To save the world from turning into something inhumane Akihiko and his comrade Asato Ayame venture through the world with spirits and creatures from stories, myths, rumours and even legends! Will they be able to change the future that lies ahead of them? Well, find it out yourself...