In Episode 15, more is at stake as Spinner leads a critical mission to awaken Kurogiri. He follows All for One's plan, using his Quirk as a strategic advantage. Spinner's attempt to activate Kurogiri with a recorded message is thwarted by Present Mic, who destroys the recording just in time. However, a device hidden in Shigaraki's charred hand triggers Kurogiri's awakening, reinforcing his duty to protect Shigaraki, and Spinner collapses from exhaustion.

At the hospital, a confrontation erupts when a group of villains, driven by All for One's commands, is stopped by the unexpected resistance of the doctors, who form a protective barrier around the patients. This bold move makes the villains hesitate for a moment, questioning their resolve.

Globally, unrest grows as an American weather forecaster publicly condemns the government's decision to negotiate with All for One, signaling a shift in public opinion. Meanwhile, Dabi spirals further into madness, relentlessly pursuing Endeavor, with Kurogiri's Warp Gate aiding his rapid advance.

On a remote island, Himiko Toga faces a decisive moment. With little time left using Twice's blood, she acts strategically for the first time. By deceiving Froppy, she activates the "Sad Man's Parade," creating an army of duplicates to overwhelm her enemies. Her intention is clear: she seeks revenge for Twice's death.

Kurogiri's newly awakened power becomes a central factor in the war's progression, as he teleports key figures like Present Mic to disrupt their focus on the confrontation between Deku and Shigaraki.