Irgendwann hat Rin sich verändert. Seit sie begann, sich vor anderen Menschen zu fürchten, lächelt sie nur noch vor Kindern und vor Riki. Verändert hat sich auch Kyousuke, der sich bei abgeschaltetem Licht in seinem Zimmer einschließt und sich weigert, zum Unterricht zu erscheinen. Als Kinder waren die Little Busters, angeführt von Kyousuke, immer am Lachen und hatten Spaß zusammen. Gibt es keinen Weg dorthin zurück? "Wenn ich irgendetwas tun kann, um diese Tage zurückzubringen, was ist es?"
Riki awakens several months before, with no memories about what happened during that time. Riki goes to stop Masato from fighting Kengo, but neither of them listen to him and Kyousuke is no where to be found. The result of the fight leads to Kengo fracturing his right arm, putting him out of commission for kendo practice; Kengo asks Riki to think of something fun all of them could do together. Rin is now afraid of everyone but Riki, who routinely drops her off at a local elementary school during the day. Meanwhile, Kyousuke is depressed and stays cooped up in his room reading manga. Initially unsuccessful to find something Rin enjoys to do, he eventually discovers her affinity for playing catch. Riki tries to invite Kyousuke to join in, but he refuses. Riki also invites Masato and Kengo to play a baseball game, but Kengo angrily refuses to participate, and Masato leaves shortly thereafter. Knowing the others are hiding something from him and Rin, Riki resolves to become a leader like Kyousuke and reform the Little Busters.
鈴はいつからか、変わってしまった。
人を怖がるようになった鈴は、もう理樹や子どもたちにしか笑顔を向けなくなってしまった。
恭介もまた、変わってしまった。
真っ暗な部屋に閉じこもり、授業にも出ていないようだ。
いつも恭介の手に引かれて、笑い合っていた幼い頃のリトルバスターズ。
あの頃にはもう戻れないのだろうか。
「もし、あの日をとり戻すために、僕にできることがあるなら……なんだろう？」と理樹は考える。
방구석에 처박힌 쿄스케. 소꿉친구들조차 두려워하며 리키에게만 마음을 열게 된 린.
이 세계는 분명히 이전과 어딘가 달라져 있었다.
그러나 그러한 사실조차 자각하지 못 한채 마음속 어딘가에 의문만을 품고 리키는 다시 리틀 버스터즈를 모으기 위해 나서기 시작한다.
不知不覺，鈴變了。她變得害怕人群，只能對理樹與孩子們綻放笑容。連恭介也變了。他把自己關在房裡，連課也不去上。從前老是被恭介拉著跑，大家一起歡笑的Little Busters，難道再也回不到過去了嗎？理樹開始思考，要做些什麼，才能讓大家回到從前…
