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 part of the day and Tetsudō's construction site later the same day, sometimes swapping shifts to get better pay. Naruko and Tetsudō also work hard and contribute to the fireworks fund. (In the manga Chiriko and Atsumu sell some items on eBay and donate money. Their school forbids part-time work.) When Menma hears that Jinta is working, instead of going to school, she rushes to the secret base where she overhears Naruko talking about the firework and then 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 Honma. They jump to the conclusion that Menma's father had forbid it.