A pack of monsters calling themselves the "Clan of the Seafolk" arrive on the shores of City J intent on invading the land. When the hero sent to fight them is defeated easily by the Deep Sea King himself, Saitama and Genos head for the city to help.
Maybe he was taking a bath
and was left behind.
.ربّما كان يستحمّ وتركوه في الخلف
Vielleicht hat er gebadet
und es zu spät gemerkt.
Il a dû fuir pendant son bain…
Forse è scappato mentre si faceva
il bagno. Vado un attimo a vedere.