Manhwa

Kaiden - A mysterious ability user who hides inside the body of a street cat. He is later picked up by Jiwoo after being injured after a fight with another ability user. He has a stubborn and bossy personality. Jiwoo - an energetic and talkative high school boy who loves cats. He is very kind and also seem to have a special ability.

After being held in disdain and having his life put in danger, an orphan from the Demonic Cult, Cheon Yeo-Woon, has an unexpected visit from his descendant from the future who inserts a nano machine into Cheon Yeo-Woon’s body, which drastically changes Cheon Yeo-Woon’s life after its activation. The story of Cheon Yeo-Woon’s journey of bypassing the Demonic Cult and rising to become the best martial artist has just begun.

Chung Myung, The 13th Disciple of the Mount Hua Sect, One of the 3 Great Swordsmen, Plum Blossom Sword Saint, defeated Chun Ma, who has brought destruction and disarray onto the world. After the battle, he breathes his last breath on top of the headquarter mountain of the Heavenly Demon Sect. He is reborn after 100 years in the body of a child. ……What? The Mount Hua Sect has fallen? What kind of nonsense is that!?

Humans call them “calamities”—the unknown, destructive creatures that suddenly appeared on earth. To challenge these calamities, the zodiac gods awakened 12 humans known as saints. But there was one more that awoke—unchosen but the greatest hero of all: Geon Lee. His allies betrayed him and left him for dead, but now, 20 years later, he’s more powerful than ever and ready to teach his fellow “saints” a lesson they’ll never forget.