Durch Menmas Tagebuch erfahren die Freunde, dass sie in der bereits vergessenen Kindheit mit Menma zusammen ein Feuerwerk veranstalten wollten. Da sie glauben, dass dies Menmas Wunsch gewesen sein muss, strengt sich vor allem Jinta an, um diesen für Menma zu realisieren.
Jinta, Naruko and Tetsudō look inside Menma's diary, where they find an entry about how the group wanted to make a firework to send a letter to God to help Jinta's mother, though modern laws prevent them from making one themselves. As Chiriko asks Atsumu why he didn't bring up that Menma called the others on that fateful day, he points out it was something that was to be kept secret from Jinta. Jinta's father points him towards a friend of his that can make fireworks, but it's revealed one would cost 200,000 yen to make. Jinta takes up a part time job in order to help raise the money needed to buy a firework, working at Naruko's game store one day and Tetsudō's construction site the next. When Menma hears of this, she overhears Naruko talking about the firework and sees the work Jinta is doing for her. However the next day, the gang learn that the firework maker is no longer able to make a firework for them, under orders from one of Menma's mother.
Anaru se réfugie dans la cachette après s'être enfuie de chez elle. Jintan lui dit que tôt ou tard, il lui faudra bien rentrer. Anaru prend une décision.
Anaru fugge di casa e si nasconde, ma Jinta le fa presente che non può marinare la scuola né scappare per sempre, costringendola a una decisione.
秘密基地に家出してきた「あなる」に「じんたん」は、ずっと学校を休むことなんて出来ない、
家出なんてずっと続くわけがないと話す。それと聞いた「あなる」は「じんたん」は昔と変わらないと告げる。
가출해 비밀기지에 눌러 앉게 된 '아나루'에게 '진탄'은 학교는 쉬지 말라며 설득을 하게 되고, 그러한 '진탄'을 보며 '아나루'는 그가 예전과 달라지지 않았음에 안심하게 된다. 한편 '멘마' 의 일기장을 보게 된 '진탄' 일행은 지금껏 잊고 있었던 '어떠한 것' 을 생각해나게 되는데... 과연 그것은 멘마의 소원으로 연결되는 것일까...?
Los amigos de Menma deciden ir a su casa para buscar pistas de cuál podría ser el deseo de su fallecida amiga, pero lo que descubren es algo muy sencillo... que cuesta mucho dinero.
