Riki hat Mio eingeladen, die Managerin der Little Busters zu werden, und das Team heißt sie herzlich willkommen. Aber gerade als sie denken, Mio würde sich der Gruppe öffnen, verschwindet sie plötzlich...
Riki wants Mio to be included among his friends, so he asks her to be the team's manager, which she ultimately accepts after initially thinking they were starting an all-male idol group. After practice, Mio brings everyone hot drinks and they exchanges phone numbers with her. The next day, the Little Busters get together to write tanka poems, but Mio leaves part of the way through. Riki finds her sitting under her usual tree, and after talking for a bit, Riki feels as if Mio wants to disappear. Riki tells Mio that he saw someone who looked like her in town, but she was no carrying he usual parasol. Before leaving, Mio tells him that she plans on submitting a tanka in a competition held at school. The next day, Mio does not show up at school, and Riki overhears his classmates saying they also saw a girl in town who looked similar to Mio. After school, Riki sees the girl standing below in the courtyard.
理樹はいつもひとりで読書している美魚を野球チームのマネージャーに勧誘する。
メンバーに温かく迎えられた美魚は、みんなと短歌を作ったりしてすぐに打ち解けたように思えた。
ところが美魚は大勢の人たちとわいわい過ごすことに戸惑いを感じたのか、
ふと気がつくとメンバーの輪の中からいなくなっていた。
いつものようにひとりで鳥にえさをやっていた美魚を見つけた理樹は、
彼女と話しているうちになぜか不安がこみあげてくるのだった。
리키는 항상 혼자 책을 읽고 있는 니시조노에게 야구팀 매니저가 되지 않겠냐며 권유한다.
의외로 니시조노는 쉽게 그 제안을 받아들이는데...
그러나 야구와 단가짓기를 함께 하면서 멤버들과 친해진 것 같았던 니시조노는 어느 날 갑자기 어디론가 사라져버린다.
理树对经常一个人读书的美鱼提出成为棒球队经纪人的想法。被成员们热烈欢迎的美鱼，和大家一起制作短歌。美鱼似乎和热闹的成员们相处的时候很困惑。而和美鱼交谈中理树也不知为何感到不安……
