Chapter 103

"Viewer-Prohibited Battle" (観覧禁止の戦い, Kanran Kinshi Notatakai) is the 103rd chapter of the One-Punch Man manga series.

Summary
The three disciples decide to trust in Sweet Mask and retreat, leaving him alone to face Do-S and the brainwashed Narinki Squad. Do-S tells Sweet Mask that she is actually a fan of him, and wants to spend some time with him alone, in exchange for 'unbrainwashing' the slaves. Sweet Mask tells her that bargaining won't work against him. Do-S responds by ordering her slaves to attack the hero, confident that she can make him "her own".

Sweet Mask effortlessly tears through the entire Narinki Squad, subsequently killing all of them. He continues to charge towards Do-S, who attempts to brainwash him by striking him with her whip, but fails to do so as Sweet Mask is somehow immune to such attacks. Realizing this, Do-S quickly surrenders and submits to Sweet Mask, promising that she will obey his every command. Unmoved by Do-S' pleas for mercy, Sweet Mask takes her life.