Chapter 126 (Online)

The chapter's first half follows Saitama, Flashy Flash, and Manako as they cart their way across a mining zone buried inside the Monster Association's base. A pack of digger monsters swarms the intruders, and the two heroes carve through them without effort. Saitama reaches for a lump of gold, then lets it slip when he turns to pull their reluctant guide out of danger. In another part of the lair, Psykos swallows an unusual serum meant to ready her for the coming duel with Tatsumaki, and after a thunderous roar she boasts that her power now dwarfs her old self as Gyoro Gyoro.

The second half turns to Garou, who is being battered by Superalloy Darkshine and hurled backward. A heavy punch snaps him fully awake from the daze left by his earlier clash with Orochi, and he answers by questioning both Darkshine and the whole philosophy of hero society. Darkshine's charging tackle splits through Garou's defense and rockets him through several floors of the headquarters, splintering his ribs, though the damage knits back together almost at once. Garou storms back with Water Stream Rock Smashing Fist and Whirlwind Iron Cutting Fist, a barrage that leaves the supposedly unbreakable hero weighing the chance of his own defeat. Darkshine answers with the full-force Superalloy Bazooka, and Garou throws a counterblow into it. The narration warns that his limiter has begun to give way. Far above, Saitama sulks over his torn cape while Flashy Flash critiques his fighting form, and out on the surface Genos frets that Saitama's outfit may have been wrecked.

Saitama and Flashy Flash wipe out the miner monsters while ferrying Manako deeper into the base, and Saitama abandons a gold find to rescue their guide. Psykos drinks her enhancement serum and declares herself far beyond her Gyoro Gyoro persona ahead of the Tatsumaki fight.

Garou trades devastating blows with Superalloy Darkshine, surviving shattered ribs to press his own assault, and the narrator notes that his limiter is beginning to crack under the strain.

Belonging to the Monster Association Arc, this online edition reached readers in two parts, dated January 25 and February 8 of 2020, and it draws partly on webcomic chapters 68 and 69. The installment carries the Tonari serialization numbers 169 and 170, and its title shares a name with the character Psykos.