After all, Eri Kisaki spent her days sitting in an office now. Without exercise, her physical fitness would naturally decline.
Of course, that wasn't the point. The point was that Yukiko Kudo was acting nothing like her former self.
Back in school, Yukiko had been incredibly lazy. Even when there were club activities, she had never joined any of them.
Yet now, she showed no sign of fatigue after climbing a mountain. She was practically unrecognizable from the Yukiko she used to be.
"Why are you still so full of energy?" Eri asked Yukiko.
Could it be that Yukiko had secretly been exercising without her knowing?
"Hehe, I make sure to exercise. I'm not like you," Yukiko said with a giggle.
After Yukiko said that, Chen and Ai Haibara both shot her a glance. Made sure to exercise? You hadn't even been serious when practicing ninjutsu, and now you had the nerve to claim you made sure to exercise?
Fine, they would refrain from looking down on her for now. Chen and Ai walked at the very front.
"Hey, Chen, why are you walking so fast?" Yukiko called out to him.
"Because I want to reach the summit sooner." Chen turned around, spread his hands, and replied.
"Aren't you going to wait for Eri? She looks like she's struggling a little," Yukiko said, looking at Eri.
Eri glanced at Yukiko, unsure whether she was deliberately making fun of her.
"I'm fine," Eri said.
Eri might not have been good at much else, but she was certainly good at putting on a brave front. Especially in front of Yukiko—how could she possibly fall behind Yukiko? That was what Eri thought.
"Eri, listen to me. Don't push yourself. It wouldn't be good if you really exhausted yourself," Yukiko told her.
"I'll carry