Chapter 176 (Online): Hypocenter

A flashback shows a younger Psykos telling Fubuki that their group is swelling and that the Invisible Hand has joined, hinting they may soon rule the world from the shadows. Walking home, Psykos praises Fubuki's greater psychic gift, though Fubuki tunes her out. Later, studying a future-seeing power called the Third Eye in hopes of toppling Tatsumaki, Psykos glimpses a vision so terrible it unhinges her, and she declares world domination pointless and the extermination of humanity necessary.

Returning to their Monster Association clash, Psykos is beaten and seized by Fubuki, who probes for the root of her madness and, cradling her, feels a chilling unknown presence. In the present, the Blizzard Group and Saitama reach Psykos just as the Tsukuyomi agent moves to take her. Fubuki warns that Tatsumaki knows the location and intends to kill Psykos, and moments later Tatsumaki smashes in, only for Fubuki and the man to shield the captive.

Fubuki recalls Tatsumaki explaining that Tsukuyomi is the organization that experimented on her and now covets Psykos. The agent announces he means to seize Fubuki and Tatsumaki as well, and a battle erupts. Saitama, mainly wanting to gripe at Tatsumaki over his wrecked apartment, is welcomed by Fubuki as useful muscle, but the violent psychic collision between Tatsumaki and the esper fractures the floor beneath him. He plunges to the level below, where a host of caged Demon-level Mysterious Beings awaits.

The 176th chapter belongs to the Psychic Sisters Arc and is titled Shingen, which Viz publishes as Epicenter. It partly adapts webcomic chapters 77, 98, 99, and 100, and its cover pairs Fubuki with Psykos.