Demon Slayer: Strength Gained With Every Swing Of The Sword

300 years ago, humankind created their own nightmare. Demons, are originally humans but the lust for power changed them inadequately, this is humans own doing. Around 300 years ago, a large asteroid bombarded the earth's very ground. This is the beginning of the birth of demons. This meteor was large, but out of the blue, a mysterious lifeform is intact in it's very core. A human named Cruzius Akiyoma was intrigued when witnessing these menacing looking creature. He interpret this as a blessing from heaven. He then owned the creature and conducted an experiment. He was surprised when he saw the structure and building blocks of life of this creature. He obsessedly pictured this as a one stepping stone through human evolution. He extracted the DNA of the creature and modified it in able to merged it to human DNA. Without any hesitation he then merged his DNA to the DNA of the creature. He is willing to offer his body to attain his goal, thus sacrificing his body is necessary. After the merging, he was surprised because nothing in particular happened. But, he suddenly felt a surging power circulating through his body. He screamed in pain as his body is gradually changing. Darkness fell upon humans as the scream of the first demon engulfed the sky, seas, forest, and fortress.

"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?!

Cassana has only wanted two things: to be a wizard and to get away from her small village. However, certain circumstances have been holding her back. Now it seems like she's going to be stuck in her hometown forever, but she is not quite ready to give up on her dreams yet. Minos is not a difficult man to like, charming, eloquent and brash, he has all the makings of a swashbuckling adventurer. So when the mysterious Prince of Zephyrus called for an expedition to find the missing Sword of the Godslayer, the only weapon known to have killed a god, Minos was the first one to step up to the task. Cassana and Minos met under stressful conditions, and it's made evidently clear that they don't like each other. But if they both want to achieve their goals, then they have no other choice but to put aside their differences and learn how to work together.

Boro Malus, and his family, lived in shame and exile after the death and defeat of his father Bora Malus. The King, enraged by the loss of his greatest warrior, stripped Bora, and his family, of all their lands and titles and banished them to live in the outskirts of the kingdom. Boro grew up with two things on his mind after the shaming of his father. The first, to return the honor to his family's name, and second, to take his father’s title of Greatest Blade-master, for himself.

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"I won't let them live!" "I will be the strongest as a demon wielding warrior!" Arya Santanu, an ordinary young farmer from a village in the west of the island of Yawadwipa. He found a pitch-black stone as big as his body in a forbidden forest. Little did he know that the stone was a dimensional prison for a top-level demon named Asura.  Unexpectedly, Arya Santanu made a promise with the demon Asura to avenge all his demon brothers. This brotherhood of demons formed a sect of criminals in the land of Yawadwipa. They are known as the group of Thirteen Black demons.  Arya Santanu's hatred intensified when the Thirteen Black Demons destroyed his village and killed his beloved brother. What was originally a one-sided agreement turned into a grudge.  How can Arya Santanu become the strongest? follow the excitement only in the devil's hand knight.