What if you woke up one morning, and everything changed?
It's one week before Christmas Eve, and Haruhi and the S.O.S. Brigade (a club for her high school's strangest and most extraordinary students) are gearing up for holiday festivities. But just before the fun kicks off, Kyon, the only "normal" member, wakes up in a weird alternate dimension, one where Haruhi attends another school entirely, Nagato the time traveling robot is just an ordinary human, and Mikuru (the cute girl of Kyon's dreams) doesn't even recognize him-in other words, S.O.S. Brigade never existed.
The only clue Kyon can find is a bookmark left by the robot version of Nagato, which leads him on a quest back in time, where he interacts with the storyline from "Bamboo Leaf Rhapsody", a short story from the previous Haruhi book, The Boredom of Haruhi Suzumiya.
This fun and quirky holiday tale is reminiscent of A Christmas Carol and It's a Wonderful Life .

人気シリーズ前後巻で登場、驚天動地の第11弾！
ハルヒによるＳＯＳ団入団試験を突破する一年生がいたとは驚きだが、雑用係を押しつける相手ができたのは喜ばしいことこの上ないね。なのに、あの出会い以来、佐々木が現れないことが妙にひっかるのはなぜなんだ？

When Haruhi Suzumiya introduces herself to Kyon by asking if he's an alien, time traveler, or psychic, he knows his chances for a normal high school experience are ruined. Bold Haruhi takes a shine to him, and uses the force of her irrepressible personality to draft him into her club to find paranormal beings. Kyon soon discovers what she's looking for: Haruhi herself has the power to destroy and create entire universes at her whim. But if she knew about her ability, it could spell disaster for everyone.

In a last-ditch attempt to recover their stolen equipment, the Computer Research Society challenges the SOS Brigade to a winner-takes-all game tournament! The game they've chosen: a multi-player space battle simulation game. Even though no one in the SOS Brigade has ever played the game before (some have never played any computer game ever), Haruhi readily agrees to the contest. Failure seems inevitable, but losing is not an option! Thankfully, the SOS Brigade members aren't just your average students. Can they pull it together to destroy the expert Computer Research Society before Haruhi destroys the whole city?

"평범한 인간에겐 관심 없습니다. 이중에 우주인, 미래에서 온 사람, 초능력자가 있으면 제게 오십시오. 이상." 입학하자마자 뒤집어지는 인사를 던진 스즈미야 하루히. 그러나 그가 진지했다는 것을 깨달은 순간 나의 일상(日常)은 이미 초현실적인 것이 되어 있다. 제8회 스니커 대상 '대상' 수상작.

世界從十二月十八日起天地變色。春日的存在本身「消失」了。原本那個世界的長門留下的唯一訊息就只有——「備妥程式啟動條件．鑰匙。最後期限．兩天後。」在困惑與焦躁的煎熬中，時間一分一秒地過去，迎向了十二月二十日。沒想到終於和「這個世界的」春日重逢了……！
微妙的非日常系學園故事，第八集。

漫畫：ツガノガク
原作：谷川流
角色設定：いとうのいぢ
「找出外星人、未來人，以及超能力者，然後跟他們一起玩──！」涼宮春日雖然用這個亂七八糟的理由成立了神秘集團「ＳＯＳ團」，不過最近她的樣子有些奇怪。在找不到外星人、未來人及超能力者的狀況下（其實都在她身邊……），春日的焦躁感揮之不去。最後，事態的發展大出意料之外!?微妙的非日常系學園故事第２集。

Readers take a step into a time warp in five short stories. Head back to events from the previous books and previously unseen scenes and perspectives to uncover mysteries that had been left unanswered. Live Alive - Kyon peruses the stalls at the cultural festival and visits Mikuru's noodle stall. Everything seems normal for once, until a surprise band shows up to perform. The Adventures of Mikuru Asahina: Episode 00 - The movie that the SOS Brigade created in The Sigh of Haruhi Suzumiya is shown and the Brigade gets to see it in its final form. * Love at First Sight - Kyon meets with an old friend, who describes seeing a girl he's fallen in love with-and it turns out to be Yuki! Will this mere human have a chance with the world's most stoic robot? Where Did the Cat Go? - This story takes readers back to Book 3 (The Rampage of Haruhi Suzumiya) in which the SOS Brigade finally begins the main event for the Snow Mountain retreat murder mystery. The Melancholy of Mikuru Asahina - Mikuru asks Kyon to accompany her to buy tea leaves, but a secret motive may be involved.

Something very very strange is going on...because nothing strange is going on...Overnight, the SOS Brigade, the existence of supernatural beings, and Haruhi Suzumiya's obsession with uncovering the mysteries have disappeared. Kyon seems to be the only one who remembers anything about the infamous SOS Brigade and its members--the former time traveler Mikuru Asahina (now a normal student), the former alien Nagato (now a timid, stammering bookworm), or the energetic Haruhi Suzumiya (now nowhere to be found?). Just where is Haruhi? Not to mention member number three, esper Koizumi? And why is Kyon, who so often longer for a normal life, so upset to find all of it suddenly gone?

★谷川流老師公認!?
★難得登上封面的阿虛＆古泉，等著他們的竟是意想不到的災難？
集體創作短篇故事歡樂登場！（男性讀者也能安心閱讀喔…大概吧）
以超人氣輕小說《涼宮春日》系列的登場人物：阿虛＆古泉為主的官方漫畫短篇集歡樂登場！
本作為多位漫畫家集體創作，主角的樣貌在眾漫畫家筆下各有千秋、
內容也天馬行空，充滿了意想不到的驚喜趣味！
封面插畫由硝音あや繪圖，彩頁插畫由成宮アキホ、氷堂れん繪圖。
漫畫由渡里、藤丘ようこ、ミキマキ、カトーナオ、秋月カイネ、
狩野アユミ、朝比奈ゆづる、岩城そよご、吉村工、梶山ミカ、永緒ウカ、
秋吉ハル、片桐美亜、倖野すず、さわたりかなん等作畫。

「第一次…我墜入了情網。」
北高文藝社所屬的普通高中女生──長門有希，
是個偷偷喜歡同社文藝社員──阿虛的內向女孩。
她在借由好友朝倉涼子的幫助之下，
為了能在社團教室舉辦聖誕派對而奮鬥著，但是……？
「消失長門」為您送上的衝擊式愛情喜劇終於登場！

都升二年級了，涼宮春日也一樣異想天開。
一下想走遍全市神社作新年參拜，一下想調查根本不存在的北高七大不可思議，
但可別以為成長得跟每天跳麻苗的忍者一樣快的我會被妳耍著玩喔。
只可惜我的小聰明一點用也沒有，鶴屋學姊先一步寄來了一封神祕信件。
她究竟是要我們從這個上流人士的世界遊記解讀出什麼東西？
天下無雙的超人氣系列作第12集開麥拉！
■各篇內容簡介
〈無厘數〉※原收錄於《いとうのいぢ畫集 春日百花》
ＳＯＳ團全體出動作新年參拜。春日、長門和朝比奈學姊換上向鶴屋學姊借來的和服，令人嘆為觀
止。路上古泉喃喃唸出的數字，究竟有何含意──
〈七大不可思議延長賽〉※原收錄於《the Sneaker LEGEND》
初夏時節的某天放學後，一名稀客造訪缺了春日的社團教室。來自推理研究社的她說，春日想要探
訪北高的「七大不可思議」──
〈鶴屋學姊的挑戰〉※新寫長篇
幾乎沒人用的ＳＯＳ團直達信箱忽然收到一封信，而寄信人竟是請假出遠門的鶴屋學姊。「到最後
會出一個問題考你們，等你們解答喔。」隨信附上的檔案，是一段含有玄機的旅行遊記，那就是鶴
屋學姊給ＳＯＳ團的戰書──

“封印”された奇書。圧巻の暗黒ミステリ。
どうにかしてくれ。夏休み、友人の建御からの電話に、杵築は耳を疑った。曰く、「俺の家に、天使と悪魔と死神がいる」と。助けを請われた杵築は、神々を名乗る変人を“追い出す”ため、街で起きている連続猟奇殺人事件を調べるが……。繰り広げられる形而上学的論争。尽きぬ謎。そして、幼馴染の狂気。連続殺人と悪魔召還の犯人は、いったい誰か。『絶望系　閉じられた世界』改題。

「涼宮ハルヒ劇場」がついに帰ってきた！　ファンタジー篇、ギャラクシー篇に続く続編は大幅完全書き下ろし！　今度の「ハルヒ」は時と世界を駆け巡る冒険スペクタクル長編！

「勇者ハルヒよ」気づけば王宮にいた俺たちは王様から邪悪な魔王を倒すよう依頼され――って、ちょっと待て、この『世界』は何なんだ？　わけが解らないまま朝比奈さんの魔法が炸裂して任務達成かと思いきや、長門の「ミッションインコンプリート」の呟きとともに宇宙空間へ飛んだかと思うと舞台は西部劇、果ては神話世界へ――。これはいったい誰の仕業だ。そしてハルヒ、今度のお前は何を想っているんだ？　奇想天外の第13巻！

《涼宮春日的劇場》終於回來了！繼奇幻篇、銀河篇之後大幅增寫全新篇章！
這次的《涼宮春日》是穿越時空與世界的長篇冒險鉅片！
「勇者春日！」一回神，我們已經身在王宮，國王託我們打敗邪惡魔王──
慢著慢著，這個「世界」是什麼鬼？
暈頭轉向之中，朝比奈學姊的毀滅魔法說炸就炸；
以為任務完成了，卻又在長門的一聲「Mission incomplete」中飛上太空，轉眼又變成西部片，
甚至神話世界──這到底是誰幹的好事？
春日，這次妳又想要些什麼？異想天開的第十三集，開幕！