I Cannot Let Summer Break End

 is an original video animation episode of The Disappearance of Nagato Yuki-chan. Based on Chapter 38 of the manga, this episode is also an homage to the Endless Eight story from the main Haruhi Suzumiya series, both in the light novels and anime. Due to it not being part of the series's broadcast package, it has never been officially dubbed into other languages, though a subtitled version appears as a bonus feature in The Disappearance of Nagato Yuki-Chan boxed set.

Plot
The Literature Club goes to a swimming pool, where they participate in a race to win some exotic fruits.

Haruhi leads the group on a wide array of summer activities, leaving Kyon with no opportunity to do his summer homework. With only two days of summer break left, Kyon admits he has yet to start on his homework, drawing exclamations of shame and disgust from the rest of the group. However, after he persuades them to help him do his homework, it emerges that none of them apart from Haruhi have done their homework either.

They have a study session at Kyon's house, where Asakura dresses up in stereotypical teacher attire to keep them motivated. However, Haruhi accompanies the group and is a distraction, digging out Kyon's PlayStation 2 and playing cards since she has no homework left. Despite Asakura's riding him, Kyon keeps making excuses to play games. Nagato also plays games all day, but following her own habit, she stays up all night and does all her homework. The next morning Kyon is the only one with his homework not done, so he goes to Yuki's apartment to copy hers.

Trivia
The PlayStation 2 is easily recognizable by its shape, color, and the logos on both the console and the games, but is named "Playatmark 2", which is a blend of PlayStation 2 and Bandai Pippin Atmark (a model of the Apple Pippin, a poor-selling late 1990s console).

A stack of six games is shown, but only the one the characters actually play, Virtua Fighter 4 Evolution, is a real game title. It is also the only one to show its publisher's name (Sega), which suggests a product placement deal, though the PlayStation 2 version of Virtua Fighter 4 was over a decade old by the time this episode aired. In the manga version of the story, none of the games in Kyon's collection are identified, and the fighting game they play is represented by generic blocky characters on crude backgrounds (though one shot resembles Ryu from the Street Fighter series performing a Shoryuken).

Characters

 * Kyon
 * Kyon's Sister
 * Tsuruya
 * Mikuru Asahina
 * Ryoko Asakura
 * Yuki Nagato
 * Haruhi Suzumiya
 * Itsuki Koizumi