A man becomes faster than a horse after his mother dies.  A sumo wrestler uses divine help to defeat an opponent. A kappa wants to marry a girl in exchange for his help.
But, since you brought me 
water from Usui every day,
Pero el rey del infierno se impresionó por 
verte trayendo agua de Usui todos los días
Pero el rey del Infierno se impresionó por 
verte trayendo agua de Usui todos los días.
Mas como você me trouxe
água de Usui todos os dias,