...Sorry to Keep You Waiting
Mika calls Yūto late at night to invite him to Haruka's birthday party on the evening of October 20. On the day of the celebration, Yūto goes to Akihabara to buy a gift and bumps into Nobunaga. After buying the gift, Yūto goes home and is fetched by Hazuki and Nanami to be taken to the party venue on an island far away together with Ruko and Yukari. On the island, Yūto meets up with Mika and Haruka. After meeting some of the guests, Yūto starts feeling insecure about his gift and social status.
Aired 19/09/2008EP 11 - ...Sorry to Keep You Waiting
Haruka Nogizaka's Secret
The story centers around Yuuto Ayase and his classmate Haruka Nogizaka. While Yuuto is rather ordinary, Haruka is very attractive, intelligent and rich. Due to this, she is the school's most unattainable girl and is so idolized that her classmates give her the French nicknames "Nuit Étoile" (The Silver Star of the Night) and "Lumière du Clavier" (The Shining Princess on the Piano). One day, when Yuuto goes to the school library to return a book, he stumbles across Haruka and her darkest secret—she is a diehard fan of anime, manga and the otaku culture. Yuuto promises to keep her secret hidden and the two become close friends. Yuuto does his best to help Haruka with her secret hobby while developing his relationship with her.
(Source: Wikipedia)