Kaoru Hanabishi is a university student and lives by himself. One day, on the way to his apartment, he meets a kimono-clad girl named Aoi Sakuraba, who appears to be lost in the train station. Pushed by the crowd, Aoi's sandal straps break, but Kaoru repairs it for her, surprising Aoi with his skill at such an old-fashioned technique. Afterwards, Kaoru takes her to the correct platform; it is the same way he is going.

Aoi tells Kaoru that she came to see her fiancé, to whom she has been engaged for 18 years. Kaoru is impressed by Aoi's devotion to her fiancé. However, when they reach the address on Aoi's note, they find that it's just a vacant lot.

Seeing Aoi so depressed, Kaoru asks her if she might have anything else that might lead to the guy. The only thing Aoi has is the old picture. "But it's just a childhood picture... Hm? Isn't this me and Aoi?" The fiancé that Aoi has been looking for is Kaoru, himself!

Tina and Kaoru show the group pictures they had taken a year prior before Tina's trip. Aoi sees a picture of Kaoru standing next to the statue of his college's founder. Since the only picture she has of him is from their childhood, she asks if she can have that photo.

The next day when Aoi is out buying food, she finds herself thinking of Kaoru and his life at school. Meanwhile at school, it is lunchtime and Tina, Taeko, and Kaoru are eating the lunch Aoi made for them and remarking how good it is.

Aoi returns home and sees something on the TV about a certain food item that Tina had been raving on. Since the vendor will be shutting down in an hour, Aoi decides to go over, buy some of this, and take it to the university for Kaoru. She wanders around the campus lost and gets seen by Tina. Tina is unable to get Aoi's attention nor get to her, so she heads off to find Kaoru. He has Tina and Taeko go to class while he continues to search for Aoi. Eventually he runs into her at the statue where he had his picture taken and together, they eat the meal she purchased. Kaoru tells Aoi that he now has the afternoon free and they can do anything she wants. She wants to tour the campus with him which he gladly does. Then Tina and Taeko find them and the group goes out to eat.