The substitutes decide to guard the black ship moored in the Osaka bay. They work together to stop the attack against the black ship, but...
I guess I've heard of catching 
fish that way, though.
Però ho sentito 
di una tecnica di pesca del genere...
Bom, apesar que já ouvi falar
de gente pegar peixe assim.
Хотя, конечно, есть
и такой способ ловли...