Aina Yoshiwara drinks coffee with Kouhei Imamura at the cafe in Grand Blue Dreaming Season 3 episode 11. She cries to ask him to help her. He doesn’t understand why she asked him out, and she cried. She says she did it because she couldn’t come up with a way. She thinks he knows the dirty methods very well. He tells her that it’s not true. She asks him to come up with a way with her.
Kouhei rejects it. He claims that he’s very busy. Aina mentions she gave the girl game to him. He asks her what does she want him to think? She explains it to him that she wants to stop the two to go on a trip. It’s the case of one of her friends. The guy she likes came into a small sum of money. He wants to use the money to take another girl to go on a trip. She worries that the two will be close because of the trip. So she wants to stop them.
Kouhei figures Iori Kitahara is going to go on a trip with Chisa Kotegawa. Aina is furious to yell at Kouhei. She mentions she said it’s her friend’s case. She asks him what she should do. He offers to frankly beg Iori. She says she cannot do it. Because they’re not lovers. It’s weird if she keeps him from leaving. Kouhei offers to confess first, then keep the guy from leaving. She worries that if she’s rejected, the current relationship will break down. She’s afraid of it.
Iori shows up. He says he’s very tired. Kouhei figures Iori worked this late. Iori says he went to support the people who work the day shift. They’ve been short-staffed lately. He thinks Kouhei and Aina have a lot of free time. Kouhei explains it to Iori that he was called by Aina. Aina covers Kouhei’s mouth. She tells Iori that they have something to discuss. He takes Kouhei to run out of the cafe.
Aina and Kouhei walk on the street. Kanako Iida sees Aina. Aina takes Kouhei to her room. He wants to go back based on personal reason. She points out that he just wants to watch anime. Kanako follows Aina. She sees her taking a boy home. She’s shocked.
Aina asks Kouhei to find a place to sit. He says he doesn’t expect he got in her room. She realizes that she let a boy get in her room for the first time.
Kanako is eavesdropping outside. She doesn’t believe it’s for that kind of goal. But she hears that Aina says it’s her first time. Kouhei says he wants to invite a friend. Kanako worries that she will be called in.
Kouhei tells Aina that if it doesn’t work, she can catch the girl in the act and threaten her. Kanako breaks into the room. She asks Aina not to date the guy. She grabs her collar, and she asks her to snap out of it. She’s so cute. She should cherish herself more.
Kouhei recognizes Kanako. She’s Kaya’s sister. Kanako learns that she misunderstood Aina and Kouhei. She feels embarrassed. Kouhei asks Aina for the stuff that she promised. She gives him the girl game. He plays it.
Keiko Suzuki and Kiyoko Kamio are on the way to Aina’s house. Keiko reveals Aina said she ran into an emergency. She guesses she asked someone to go see a movie with her. Kiyoko tries to open the door of Aina’s house. But she hears strange voice. She thinks Aina is making progress way too fast. Keiko says it’s evolution. But it’s normal that a college student does it. But Kanako wants to join it as well.
Keiko and Kiyoko break into the room. They say it’s too early to do team sports. Kiyoko learns that it’s the girl game that she gave to Aina. Keiko mentions Aina occasionally loses control. She thought. Aina blames Kiyoko for giving her a bad game. Kiyoko asks Aina isn’t it fun? Kanako says that’s not the problem. She thinks Kiyoko should have told it to Aina if it was that kind of game.
Kouhei tells the girls that he’s going to leave. Kanako reminds him that Aina’s relationship counseling session isn’t over yet. Keiko asks Aina why it turned out to play bad game. Aina yells at Keiko. She didn’t know the content of the game. Kouhei tells Aina that she can learn dating through the game. She doesn’t believe that she can learn it.
The next day, Aina meets Kouhei at the cafe. She tells him that she wants to let the guy be busy. He comforts her that he came up with a plan. She’s very happy. But she asks him why they have a meeting there since he has a plan. Naomi Otoya shows up. Aina remembers Naomi is in charge of kitchen. Naomi explains it to Aina that they’ve been short-staffed lately.
Kouhei asks Naomi did Iori treat her to a meal? She says no. She asks him what happened. He reveals the guy won the lottery. He wishes him well from the bottom of his heart. The problem is how he will spend the money. That fool plans to give the money to a girl. Naomi is surprised that Iori would do something like that. Kouhei tells Naomi that Iori plans to take a girl to go on a trip. He wishes the guy will be busy. Sakurako Busujima overhears it.
In the classroom, Iori is tired to sleep on the desk. Nanaka Kotegawa worries about him. He mentions his job. She figures he was bullied. He says he got used to it early. Aina figures the bullying never stopped. He doesn’t understand why his schedule is full, especially weekend. He notices she’s very happy. She denies it. But she thinks it’s a good news. Although she doesn’t know what happened, it went very smoothly.
Nanaka knows Iori still has to go to class. He cannot take a break a break, and he will be tired. He says the shop he works will close for renovations. It will be fine as long as he holds out until then.
In the evening, Aina calls Kiyoko. She tells her that the plan failed. She is at a loss. Kiyoko suggests that Aina should go on a diving trip as well. It’s not weird that she goes to Okinawa for diving. Maybe she can run into the two at the place. Aina takes Kiyoko’s advice. Kiyoko asks Aina will she go to Okinawa alone? Aina says no. After all, she’s going diving. She will invite Kouhei. Kiyoko learns that Aina wants to go on a trip with a boy as well.
Iori and Chisa arrive in Okinawa. Iori is excited. He says it’s his second time to come to Okinawa. The weather is also nice. That’s really great. He doesn’t understand why Chisa looks so listless. She says that’s just how she usually is. He thinks she shouldn’t be sulking even if she cannot go diving on the first day. He asks her is she nervous? She denies it. She guesses they’re going to rent a car to go sightseeing. He asks her to drive. She figures he plans to drink. She doesn’t care. He asks her is it really okay not to go to Miyako Island? She says she likes mainland as well.
They rent a car. He says they’re going to drive all the way around the coastline. They go for a swim in the ocean if they see beautiful beach. She thinks it’s a good idea.
They set off. He says he found a delicious curry recipe. She knows the recipe. She’s interested in it as well. He offers to cook it next week. He lets her park the car. He buys a hamburger from the hamburger store. She points out that it’s still early for lunch. He says he just eats it as a snack. She notices that the rearview mirror isn’t adjusted properly. He asks her did she not adjust it before she got in the car? She says she forgot it.
He says he wishes his stomach turns into a bottomless pit when he travels. She knows the feelings. He feeds her some french fries and the juice. He rolls down the car window. He sees the sea. He says it’s beautiful. He remembers the convertible he took. She guesses what he meant was the small truck. He offers to rent a small truck tomorrow. She rejects it.
They arrive at the beach. She asks him to wear his swim trunks next time before he swims. He says he will try his best. She asks him to put into practice. She goes to restroom to get changed. He says he gets changed in the car. He asks her not to peek. She says she won’t peek even if she’s paid.
He takes off his clothes in the car. But she opens the car door suddenly. It startles him. She asks him to take the first aid kit for her. He asks her was anyone injured? She says it wasn’t her.
He lies in the ocean. He says that’s great. She says the seawater here isn’t sticky at all. She offers to be snorkeling. He agrees and he takes out the fins. She asks him when did he buy it? He says it’s the lottery results. She thinks he’s so cunning. He mentions she already has a lot of gear. He notices that she has many swimsuits. She asks him is he not afraid of water anymore? He says he overcomes quite a lot. The only thing left is to learn how to swim.
He has excellent motor skills. She believes that he will learn it soon. He tells her that it’s the first time that she praises him. She blames him for doing something that she couldn’t praise him. It’s not the first time. She praised him ever. But he forgets it. She wants to teach him to swim as long as he doesn’t mind.
They leave the beach after they had fun. He asks her to drive to the bar with live performance. After they drink, they will let the designated driver send them back to the hotel.
At the bar, they drink. He invites her to dance with him. But she rejects it. He figures she’s not good at dancing. He offers to teach her to dance. Because she taught him to swim. She dances with him in the end.
They return to the hotel. But they only see a bed. She figures he wants to sleep with her. She’s startled to step back. He denies it. He claims that he ordered a two beds room. They visit the hotel owner. Iori wants to change a two beds room. But the hotel owner says that there’s no that kind of room in his hotel. Iori and Chisa are a couple, so it’s not a problem that they sleep in a bed. Chisa asks the hotel owner to fix what he said. It damaged her reputation. Iori says that they’re not that kind of relationship.
Iori and Chisa return to the room. They have no choice. She says she will feel guilty if he sleeps on the street. It’s fine if he can sleep in the bathtub. He mentions they slept together ever. She points out that that was an accident. He says they were caught by her sister, and they were almost forced to get married. She says she was in pain for a long time. He promises her that he won’t let her be in pain today. The bed is so wide. She gives in. He asks her to go to take a bath. But he’s told that there’s a room available. He needs to go to the room. He asks her does she feel lonely? She claims not at all.
The next day, she waits for him in the lobby. They walk out of the hotel. He finds out that it’s a hotel street. They try to go to the place that they parked the car. But they see Kouhei and Aina walking out of the hotel. The four are shocked.