All the girls compete on spending time together with Kaoru. But when they hear that the poor and tired boy has a deadline to keep for finishing an important report at university, they now try to ""help"" him in different ways. Only after Aoi saved Kaoru from another of these ""attacks"" and scolded the girls for preventing Kaoru from working, they leave him alone. But when the report is finally finished, this is an event to be celebrated...

We already had some impression of Chizuru's swimming skills in episode 2 - but nonetheless, their school's swimming club nominated the ""Three Amigos"" (Chika, Natsuki and Chizuru) as their relay team for the ""18. Regional Swimming Competition"". Which means that each member has to swim at least 25 meters. But all is not lost, as they happen to know the best swimming coach in the world: Tina Foster! So they're going to swim like fish...

Tina decides to buy a ferret much to the chagrin of Miyabi. Since pets make messes, Miyabi says she doesn't want to make more work for Taeko. However, Taeko sees the animal and goes, "KAWAII" which ends Miyabi's argument. The ferret escapes confinement and heads straight for Miyabi, stealing her favorite pen. This causes her to chase the animal all through the house. Finally, Miyabi locks herself into her study and refuses to answer anyone. The ferret encamps outside of her door and then tries to get in by climbing up a grandfather clock to go into a small open window above the door. Unfortunately, the animal falls and gets stuck behind the clock. Miyabi aides the others in rescuing the poor animal and the ferret gets a name.

Mayu's mother (working in Paris) designed a new summer dress and sent it to her daughter. And what better opportunity would there be to wear that but on a date with Kaoru? So Mayu, being the girl she is, visits the well-known Western Style house and asks her Hanabishi-sama out for a date - right in front of all other inhabitants...

It's summer holiday time for Kaoru - and Tina wants out for a trip, together with the rest of the inhabitants of the western style house. So they all are out on the road this time - what a pity that Mayu can't go with them... You know what to expect when Taeko is driving one of the cars... later, we will see some onsen scenes, a barbecue and finally all the characters playing party games. But then...

Miyabi and Aoi have to leave for a day to take care of family business leaving Kaoru in charge of the house. The other two male members of the photo club come by and nab Taeko for some cos-play photos. This leaves Tina and Kaoru alone for the night. A storm comes along and knocks out the power causing Tina to insist on being alowed to spend the night with Kaoru. Surviving the night, the next evening, Tina and Kaoru start drinking and Tina trashes the place. Miyabi and Aoi return and Miyabi is ticked about the mess and forces Kaoru to clean it up while the culprit Tina gets taken to bed.

a trip to the zoo becomes a day with Tina followed by a drunken night in a love hotel! Will Aoi really believe they simply fell asleep? part 1

Kaoru and Aoi encounter a severe frost Aoi's father forces Aoi to return home in an attempt to separate her from Kaoru forever!

Chika tries to learn playing tennis for some forthcoming sports event; Miyabi has been a good tennis player some time ago and volunteers to teach her.

Aoi has never visited a spa resort before, so the whole team (including the Three Amigos) takes the chance to do so, where they have a lot of fun in the bath, the sauna, and some even with a massage... a great scenario to provide lots of fan-service! Yet, a good opportunity for some of the characters to think and talk about important things as well.

Most of the inhabitants expect Tina to return soon from her trip home to America - only Kaoru and Aoi have seen the paper that Tina left at her door, and Aoi seems to miss Tina the most. But finally, when they were about to give up on their friend, the Enishi of the Western Style house shows its power...

Taeko shows up at the cottage with her bags packed desperately in need of a job and place to live. She just was fired from her last job as housekeeper so Miyabi decides to give her a chance. Sadly, Taeko is very clumsy and despite her efforts to do a good job, she constantly is breaking something. Miyabi has seen enough and decides to fire her. However, Aoi steps in and encourages her to make one final effort—to make a dinner. She does and Miyabi relents and lets her stay on.

Chika-chan invites two of her class mates to visit her home at the mansion, where she ""lives together with a guy"".

"Excuse me... I would like to scrub your back so would you mind if I came in?" Kaoru is flustered by Aoi's sudden idea. He tries to push her away when she enters (wearing her clothes), but Kaoru steps on the soap, and both of them fall on the floor. Something soft touches Kaoru's hand and cheek. Kaoru is on top of Aoi, hands, unwittingly, on her breasts. When Aoi's scream shakes the whole apartment, the door opens and Aoi's caretaker, Miyabi Kagurazaki jumps in, looking furious. When she sees him naked and on top of Aoi on the floor, she throws Kaoru against the wall. "Lady Aoi, are you aware of the position that you've put yourself in?" Actually, Aoi came to Kaoru without telling anyone about it. Miyabi says that Kaoru, who left the Hanabishi, is no longer Aoi's fiancée, and tries to take Aoi back home. Aoi frees herself from Miyabi's grasp, and says to Kaoru, "I cannot imagine being with anyone other than Kaoru-sama...Won't you please reconsider returning to the Hanabishi? So that we can be together..." With Aoi's words, Kaoru is...

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.

The photo club puts on a show with Tina and Taeko wearing outfits to draw attention. To this event comes Mayu -- a girl who's been living in England and has returned to go to this college at 16. Seeing Kaoru, her mood improves and she flings herself at him and kisses him on the lips. Tina and Taeko are stunned by this.

Chika, tricks Kaoru into taking a bath with Taeko!

Autumn has arrived, and three guests at the western style house are about to leave for the holidays. And Tina is making lots of photographs with her brand-new digicam to show them to her parents. But all things are not what they seem...

Mayu, who comes from a wealthy family, convinces Kaoru to come to her house for dinner. Kaoru informs Aoi of this though he neglects to tell Aoi that his friend is a female. Then Mayu convinces Kaoru to spend the night at her house since she's there alone. Again, Kaoru calls but doesn't let Aoi know that his friend is female. However, when Taeko lets it slip that she was surprised Kaoru's friend would kiss him like that and that the friend was female, Aoi is suddenly worried.

Mayu tries to learn cooking from Aoi in a attempt to win the love of Kaoru.

a trip to the zoo becomes a day with Tina followed by a drunken night in a love hotel! Will Aoi really believe they simply fell asleep? part 2

Miyabi and Kaoru drive back to the Sakuraba to meet with Aoi again so that they can take her back. But Kaoru will have to go through Aoi's father first.

Professor Itsuki is thankful for Kaoru's work in his institute and makes a present of two tickets for a sea trip to Yokohama: ""Think about your future - you should go there with your girlfriend."" As the other girls all happen to be absent and Aoi is bored anyway, this opportunity comes just in time - so here we go! No ""harem scenario"" today... the main storyline is back at last.

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!

It's decided that Aoi should stay at Kaoru's for the night, but he can't relax because it is the first time Kaoru had a girl at his place. He tells Aoi that there is only one futon, but she can use it and he will sleep on the floor. Then Aoi says, "I propose a compromise, Kaoru-sama. Instead, we can share it if you are willing. I don't mind at all..." To cool his head down, Kaoru goes outside. "She said she was my fiancée? I only knew her when she was a little child. But she is not a bad girl, and she is really cute..." But to accept Aoi, it means that Kaoru has to go back to the Hanabishi family, which he left behind. The bitter memories come back to Kaoru's mind...