One Punch Man Manga Online Chapter 2

In Chapter 2, the story introduces a new character — Genos, a powerful 19-year-old cyborg who battles a monstrous creature called Mosquito Girl. Despite his strength, he struggles in the fight and is nearly killed. Just as things look hopeless, Saitama arrives in his usual casual way and defeats Mosquito Girl effortlessly — by slapping her into pieces. Genos is stunned by Saitama’s power and begs him to become his sensei (teacher). The chapter contrasts Genos’s intense, serious nature with Saitama’s bored, laid-back attitude, showing how ridiculous Saitama’s strength is compared to even powerful cyborgs or monsters. Their meeting marks the beginning of a new dynamic duo.