Leorio: How did the bald guy I knew suddenly turn into a nuclear bomb?

A month later, in Yorknew City.

Saitama and the others had barely stepped out of the train station when the sea of people stunned them. The streets were packed with merchants, Hunters, and mobsters from around the world. A giant billboard on their left displayed a countdown to the Greed Island auction. An even bigger billboard on their right bore gleaming gold letters: "First World Milk Expo."

Saitama's eyes instantly locked onto the right, and he nearly drooled. "Genos! That limited-edition golden milk foam! And that canned yak milk that keeps for ten years! Let's go to the convention center first!"

"Wait, Master!" Gon hurriedly grabbed him. "We have to meet Leorio first! He said he'd wait for us at the station exit!"

No sooner had he spoken than a familiar booming voice erupted from the crowd. "Gon! Killua! Over here!"

Wearing an ill-fitting suit, Leorio squeezed through the crowd and rushed over. He gave Gon and Killua a huge hug, then immediately spotted Saitama beside them, holding half a case of milk samples, and Genos pushing an entire cart of milk.

"Hey, Saitama!" Leorio's eyes lit up, and he patted Saitama's shoulder. "What brings you guys to Yorknew City? I thought you'd gone home after the Hunter Exam!"

With a milk popsicle in his mouth, Saitama mumbled, "To buy milk. There's a Milk Expo here. They've got milk from all over the world."

Leorio burst out laughing. "You haven't changed a bit! Anyway, what did you do after the Hunter Exam? I went back to medical school, and Kurapika became a bodyguard for the mafia. I haven't been able to get in touch with you guys."

Sucking on a lollipop, Killua said casually, "We went to fight at Heaven's Arena."

"Heaven's Arena?" Leorio nodded. "Nice, nice. Good way to