Mei, Aiko, Asami, and Nagi are making cookies at Mei's house. Knowing that the process could take a while, Nagi chases Yamato out of the house. He receives a text from Kai, who asks him if he wants to meet up at the park. When Yamato arrives, it is revealed that the rundown park was where the two of them first talked and bonded for the first time. After bantering a bit, Kai asks Yamato why he, who had always seemed to be having fun with a large crowd around him, was always the first one at the park after school. Yamato admits that he used to feel like he was a chameleon; someone who didn't have his own personality and just changed himself to please others. Kai tells Yamato that he used to hate the town, but thanks to Yamato, he now finds it to be beautiful. Kai reassures him that he is his own person, and Yamato confesses that after he met Mei, he realized just how lonely he was. Kai later runs into Megumi at the bus stop. They start talking, and Kai tells her that he thinks she's cool for staying true to herself while modelling. Megumi snaps back at him, and Kai, offended, leaves. When Momo comes, Megumi regrets lashing out on Kai and later becomes embarrassed when Momo suggests that Megumi likes him. At Mei's house, the cookies are done and turn out to be delicious. Mei's mom shoos Mei and Yamato out of the house. Yamato hugs Mei and tells her he's glad she's with him. They watch the sunset together before continuing their walk, holding hands. (Source: Wikipedia)

In the distant future, a majority of humans have left the Earth, and the Galactic Alliance of Humanity is founded to guide exploration and ensure the prosperity of mankind. However, a significant threat arises in the form of strange creatures called Hideauze, resulting in an interstellar war to prevent humanity's extinction. Armed with Chamber, an autonomous robot, 16-year-old lieutenant Ledo of the Galactic Alliance joins the battle against the monsters. In an unfortunate turn of events, Ledo loses control during the battle and is cast out to the far reaches of space, crash-landing on a waterlogged Earth. On the blue planet, Gargantia—a large fleet of scavenger ships—comes across Chamber and retrieves it from the ocean, thinking they have salvaged something of value. Mistaking their actions for hostility, Ledo sneaks aboard and takes a young messenger girl named Amy hostage, only to realize that the residents of Gargantia are not as dangerous as he had believed. Faced with uncertainty, and unable to communicate with his comrades in space, Ledo attempts to get his bearings and acclimate to a new lifestyle. But his peaceful days are about to be short-lived, as there is more to this ocean-covered planet than meets the eye.

The story involves two pairs of teenage elder sister and younger brother, the Shinmoto's who are a bit narcissistic and the Saitou's who look a bit mysterious. It follows their everyday life in school and at home. (Source: MAL News)

The story is set a couple of years after the events of Sword Art Online, where Kazuto Kirito Kirigaya and his sister Suguha meet up with Asuna Yuuki, Rika Lisbeth Shinozaki, and Keiko Silica Ayano at the SAO Survivor School. Kirito then attends emergency counseling, while the girls go for a swim at the pool. It turns out that said emergency counseling is a subterfuge set up by Seijirou Kikuoka, aiming to rehash the incident of Sword Art Online in hopes of determining Akihiko Kayaba's motives. What will the girls get up to in the pool, and what awaits Kirito and his counseling?