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.
It was a very hot and muggy day.
Ese día hacía un calor sofocante por 
lo que Onitayu se bañó en un río.
Ese día hacía un calor sofocante, por 
lo que Onitayu se bañó en un río.
Era um dia quente e úmido.