Kouki--a stream of light flowing deep underground, the font of all life. When a man ignorant of its effects on the living meddles with it, the mushi-shi must act before there are unintended consequences.
In exchange...
...في المقابل
Versprich mir,
A cambio, dejarás de distribuir 
ese sake en el mercado.
En échange, je veux que 
tu évites de distribuer cet alcool.
In cambio...
Em troca...