第 6 集: Silver Week 期間，Nagi 留在 Hayate 身邊，而 Ruri 則揭曉她尋找黑山茶花的任務。

Silver Week has arrived, but Nagi now has no interest to depart for Las Vegas and retrieve her late father's possessions, rather spend the day with Hayate instead. Later she pays a visit to the Violet Mansion, just to find that Ruri is alone. Nagi receives a message from Chiharu and Kayura saying that they will arrive in Las Vegas to see Ruka's concert. Unable to leave when it starts raining, Nagi manages to have Ruri confess that her true intention is to obtain the elusive "Black Camellia", a treasure believed to be in possession of the Sanzenin family and Nagi asks her grandfather by phone about it. However, Mikado refuses to say anything beyond the fact that the treasure was stolen 13 years ago and she breaks her smartphone in anger. When the rain worsens into a storm, the two girls struggle to keep the house by themselves when Ruri saves Nagi from being hit by a large tree branch carried by the wind. When the storm passes, Hayate appears at the mansion and he gets a call from Mikado who reveals to Nagi that the Black Camellia was stolen by her father. (Source: Wikipedia)

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