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.
The lord hired me.
Voy a ser un subordinado de 
un samurái de alto rango.
Voy a convertirme en subordinado 
de un samurái de alto rango.
O senhor feudal me contratou.