One Punch Man Manga Chapter 137

Bang, Bomb, and Fubuki—previously sidelined—join the S-Class heroes on the surface. Atomic Samurai questions Child Emperor about their inclusion, leading to explanations and Bang’s forgiveness. Fubuki urgently requests aid for her sister Tatsumaki, who is collapsing.

As Drive Knight and Genos guard Tatsumaki, she recalls her traumatic childhood: trapped during a lab monster outbreak, she was rescued by Blast, who awakened her psychic power to protect others. Revived, Tatsumaki rejoins the fight.

Drive Knight pursues Psykos into a tunnel, countered by her attacks. Tatsumaki creates barriers to trap Psykos, who escapes—only to be ambushed by Genos and Drive Knight leaping onto her jet. The duo prepares to deliver a final blow.