I'm going to try to fix this story later. Right now, I'm in a rush.
A long time ago, there was once only one clan. That one clan was the Kaguya. The clan that use bones to there advantage. After a couple of decades, there were people who split off from that clan, and became the Emoto clan, who can use blood to there advantage. Most people where happy with there new abilities, but of course, there's always a rotten apple within the group. Within the Emoto clan, there were people who wanted more power, land, money, and respect. At first it was trival, but over the years, it almost became too bloodly. Before it got out of hand, the Emoto's clan leader, evicted the rebels. During the evicted, they lost all faith in there god, and looked towards another divinity. Cancer was one of the people looking for a higher power, and founded it. He began to worship the devil himself, praying to him that they gain a better power, to wipe out the first acensding clans. Months later, their prayer's was sorta answered. They gain the power over all of bateria, viruses, and parisites. Anything that makes the human body sick, they have that power. After a while, one of the Devil's son spoke to Cancer in the church they made for him. He ask Cancer whether he was willing to give up his life and walk by his side. Cancer said yes without a doubt and never looked back....
His goal: Kill all of the Kaguya's and Emoto's clansmen and anyone who stand in hs way. And also to take all four Village's for himself and the Devil's son.....