Nikki becomes the first member of the Tsukasa Empire to convert to the kingdom of science. Meanwhile, with Chrome in mortal danger, Senku and the kingdom begin plotting a way to bring him back to safety.
He was a sonar operator on a submarine.
.كان مشغّل سونار في غواصة ما
Er war Sonartechniker
auf einem U-Boot.
Era operador de sonar de un submarino.
Era operador de sonar de un submarino.
Il était opérateur sonar
dans un sous-marin.
Era l'addetto al sonar su un sottomarino.
Ele era um operador de 
um sonar em um submarino.
Сидел за гидролокатором на подлодке.