Since when?

Slater huffed and tossed the laundry on top of the washing machine. Picking up the detergents, he couldn't help but recall Penny's words. 

"Does she really eat while sleeping?" What she said left a huge question mark on his mind. "She must be kidding. There's no way she will still eat while sleeping."

And he was correct. Penny usually stayed up at night to study the market flow, despite already having clear ideas on where to invest her money. 

"Never mind." He shook his head and grabbed the uniform. His expression gradually turned somber while holding the uniform in front of him. "How many washes would it need to get rid of the smell and dirt?"

Because of what was happening in school, Slater would graduate from the school of laundry before his real school.

He sighed, crumpling up the fabric to throw it in the machine. But just before he could, a hand swiftly snatched the balled fabric from his hand.