Ayumu takes Hinagiku to a Ferris wheel which overlooks a grove of cherry blossoms. At the Aizawa mansion, Nagi goes missing and Hayate and the others try to figure out where she is. Hinagiku tells Ayumu that she betrayed her and that she too is in love with Hayate, though Ayumu does not think that this is a big deal. Hayate finds Nagi on a balcony and wants to comfort her, but ends up destroying the atmosphere. Nagi tells Hayate that she will keep him close to her for the time being.
喫茶「どんぐり」で偶然出会ったヒナギクと西沢さん。ハヤテに自分の想いを伝えるため、西沢さんを夜桜観賞に誘うヒナギクだが、何の因果か銀杏商店街のシンボル「銀杏大観覧車」に乗ることに…。一方、咲夜の誕生日会が行われている愛沢家。疲れて寝室で寝ているはずのナギの行方がわからなくなり、皆が心配していた…。
