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So I was going through some SZS trivia when I found this:

>Episode 12: At 4:26, a pack of cigarettes flashes by, followed by the name "Ai KaOO." This is a reference to Ai Kago, a popular idol singer who was photographed smoking underage in early 2006, an event that caused her agency to suspend her career for nearly a year. Shortly after plans for her return were announced, she was fired for spending the night with a man almost twice her age, and reportedly smoking underage again.

So remember kids:
Smoking is bad.