[Library] Screams after the last book → found out it's 398/400 with 2 wrong rows Luca

After organizing the library for nearly 7 hours, Luca finds the last book and screams "the last one" in triumph. But immediately after, viewers point out it's only 398/400 with 2 rows mixed up, and the principal harshly criticizes the work as "not perfect."

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