To investigate a shipwreck, Kitaro visits a port city alone, but none of the residents will talk to him. Kitaro pushes ahead with his investigation, but Ratman's betrayal causes him to be caught by a giant squid. Merpeople appear! The shipwreck was their doing. Kitaro fights desperately, but the merpeople use deep sea youkai techniques to change their form and...!?
"Once made human,
you can't become a yokai again."
لن تصبح يوكاي مرة أخرى"
".بعد أن تُحوّل إلى بشري
"Una vez sea humano, no 
podrá volver a ser yokai".
"Una vez sea humano,
no podrá volver a ser yokai".
"Una volta diventato un essere umano, 
non potrai tornare a essere uno yōkai una seconda volta."
"Quando transformado em humano,
não pode voltar a ser Yokai."
«Став человеком, обратно в ёкая 
больше не превратишься».