

Grand Blue Dreaming
A college student joins the local diving club after meeting some rowdy upperclassmen. New adventures in booze and the ocean await.
Seasons

E1Deep Blue
Jul 14, 2018
When Iori Kitahara heads off to college, he decides to live at his uncle's dive shop in Izu. Iori is looking forward to experiencing college life, but ends up running into a group of tough guys playing strip rock-paper-scissors. Iori gets dragged into the diving club's crazy shenanigans and ends up spending his first day in college wearing nothing but a pair of underwear.

E2Underwater
Jul 21, 2018
After a cutthroat battle with Kohei Imamura, a handsome otaku from school, Iori ends up joining the Peek-a-Boo diving club. Iori arrives home worn out from the day, but perks up when he hears about a party with a women's college. However, his cousin Nanaka won't allow him to stay out three nights in a row, so Iori tries to show her he's an independent man to get her to let him go.

E3A New World
Jul 28, 2018
Iori and Kohei don wetsuits and head to the sea! Although Iori used to be afraid of the water, he starts becoming more interested. But diving equipment is expensive! Tokita and Kotobuki decide to hold a men's beauty pageant for the Izu Spring Festival in May. The guys want to avoid being paraded around on stage, so they try to get Chisa to participate in a women's beauty pageant.

E4The Male Beauty Pageant
Aug 4, 2018
The Izu Spring Festival has begun! The members of Peek-a-Boo run an okonomiyaki stall with Iori, Kohei, Chisa, and Azusa helping out. Iori finds himself in a complicated situation when a misunderstanding with Azusa occurs and a rivalry with the tennis club Tinkerbell begins. When Chisa gets nervous and freezes up during the women's beauty pageant, Iori and Kohei think of a plan to cheer her on.

E5Too Late
Aug 11, 2018
Iori and Kohei attend class in their underwear like normal, but everyone glares at them with a bloodthirsty look in their eyes! It's because they heard that Iori and Chisa are dating! Sensing their lives are in danger, Iori and Kohei offer to setup a mixer. They ask Azusa to introduce her friends, but she brings Aina Yoshiwara, the "Cakey" girl from the Izu Spring Festival!

E6First Buddy
Aug 18, 2018
Inori and Kohei get through their exams by cheating. Meanwhile, PaB throws a welcome party for Aina, their new member. Aina was looking forward to getting a new start to college life, but discovers that no one in the club is normal! Nevertheless, the club members are serious about diving and have the new members learn basic hand signals and dive in pairs. However, Iori gets paired up with Chisa.

E7Doubles
Aug 25, 2018
Iori and the others dream about going diving at a beautiful location after seeing an article on Miyakojima in a magazine. However, Tokita and Kotobuki decide the club is going to join a tennis doubles match! They explain that they're joining the match to get everyone to build trust with their diving buddy, but the real reason is to get back at the tennis club and take away their prize money!

E8Men's Cocktails
Sep 1, 2018
The members of the diving team start working part-time jobs to pay for their trip to Okinawa. However, Iori and Kohei end up spending all their earnings on drinking. Meanwhile, Kotobuki is working hard as a bartender, and his boss lets Iori and Kohei try it out too. However, these two idiots don't know how to make cocktails, and end up creating some dangerous new drinks!

E9Truth or Dare
Sep 8, 2018
Iori tries to setup another mixer for his friends, and wants to ask Chisa to introduce her friends so they can all play truth or dare. Nanaka and Azusa also get involved, and they all begin a vicious game of attack and defense! However, Iori doesn't have enough money for their trip. Iori and the gang head to a diving shop to buy diving gear, but find out there's still a lot they don't know.

E10Arrival in Okinawa
Sep 15, 2018
The Peek-a-Boo members arrive in Okinawa! After checking out their gorgeous vacation home, the group decides to head to the beach. In order to make sure the guys don't try to get naked, they decide to go to a popular beach with lots of visitors, where they have some wild fun on a banana boat. However, Iori loses their banana boat contest and ends up having to sleep in Nanaka and Azusa's room!

E11You Have the Wrong Idea
Sep 22, 2018
"You might be the only one who can't pass the license test," Nanaka says to Iori, pointing out what he's bad at. To avoid being made fun of by Kohei and Nanaka, he practices secretly. Yet, while practice, all he thinks of is how to poison them at dinner. He avoids being pairs with Kohei and Aina and gets Chisa to promise to help him with practice. But, these interactions cause misunderstandings...

E12Otori
Sep 29, 2018
For the last half of their trip, the Peek-A-Boo members arrive in Miyakojima. Everyone goes for a serious dive into the majestic sea with the exception of Iori, who couldn't obtain his license. Everything is magical with the stunning coral reef, colorful fishes and sea turtles, until the members engage in PaB-style Otori (a drinking custom of Miyakojima), which turns things into a living hell...
University is back in session for Iori, and so are the booze-fueled parties! Between diving club shenanigans, a surprise from his sister, and wild tests of courage, normal college life is anything but. Dive back into the madness with Iori and his beloved crew of lively splash artists.

E1Sister
Jul 8, 2025
Iori receives a letter from his little sister back home. Note: This is still a diving anime.

E2Brother
Jul 15, 2025
Shiori's here and on a mission! How will Iori handle this situation?

E3Association
Jul 22, 2025
Aina is out of control! But why?

E4Ticket Scramble
Jul 29, 2025
Aina has a spare ticket for the Oumi Women's University Festival, and it causes all sorts of chaos.

E5First Time at a Women's University
Aug 5, 2025
Iori and Kohei attend the All-Girls College Festiva, but the girls ask them to help out at the cafe.

E6Back to the All-Girls College
Aug 12, 2025
After being expelled from college, the boys devise various plans to get back into it.

E7The Charpy Impact Test
Aug 19, 2025
Iori and his class need to cooperate and do a very dangerous experiment together.

E8Coworkers
Aug 26, 2025
Iori runs into a familiar face at his new part-time job, and this is going to complicate matters!

E9Are You In Love?
Sep 2, 2025
All sorts of misunderstandings ensue as attraction comes into the equation.

E10Movie Date
Sep 9, 2025
Iori is asked out on a movie date, and he hears some news that complicates things.

E11Let's Go to an Uninhabited Island!
Sep 16, 2025
The gang heads out to a camping site on an uninhabited island, only to run into some unexpected faces.

E12Now We're Even
Sep 23, 2025
Iori learns that a lot will soon change for the club.
E1Episode 1
Jul 7, 2026
E2Episode 2
Jul 14, 2026
Storyline
A college student joins the local diving club after meeting some rowdy upperclassmen. New adventures in booze and the ocean await.
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