One-Punch Man. Book 7. One

A thousand -eyed octopus is atrocious on the streets, but the heroes of class A cannot defeat it. Whether the heroes of class S will be able to cope with Mollusk and why the monsters attack so many cities at once, so far it is not clear. Meanwhile, the outcome of the superbate is almost a foregone conclusion.

Alas, participants in the competition do not even suspect that a dangerous monster is approaching the stadium...