[quote=whizzball1]
I shall try, my dear. So, what is a Yoma and a Claymore?
[/quote]

Yoma are the natural predators of humans, placed on earth by the devil himself. Humans are absolutely defenceless against them, and Yoma can disguise themselves as humans. Claymore are paid to kill Yoma. We're trained to control our emotion so that we can release Yoki, Yoma power, to the extent we need. 0.1% Yoki = 100 times your current power. We can sense Yoma among any magnitude crowd.