The Case!

Near the gate of the academy's library. Three people stood by, waiting for someone's arrival. Just five minutes before the meeting time, a blue-haired woman appeared behind them.

"Everyone's already here. It's good to be punctual." Olivia said with a smile.

Luis and Alicia turned back silently. While Diana said with a proud expression. "Of course, I came here 15 minutes early."

"Good." Olivia praised, then said, "Okay, now follow behind me closely." To which they nodded in understanding.

When they entered the library. Olivia took them along a certain route, going downstairs leading to an underground floor. There they met two academy guards. To whom Olivia showed a token, which allowed them to pass through.

As she noticed the confused and curious gazes locked on her. Olivia explained. "It's a permission token we need to pass through the barrier ahead."

"Professor, why are we here anyway? Aren't we going on a mission?" Diana asked.