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Nagisa offers her favorite umbrella to Kagome but does not give her name. Later, Kagome gets help from Chikaru and her friends, and they start to try and find out who gave Kagome the umbrella.
The "Seven Mysteries" of the Strawberry Dorms are mentioned. Nagisa and Tamao start to investigate the first mystery: "The Girl of the Hallway", despite Nagisa's terrible fear of the supernatural.
Nagisa starts to prepare for the mid-year exams by getting tutored by Shizuma in French.
Nagisa, accompanied by most of her friends, go on a short trip to the beach during "summer school".