Yuzuki listens to a popular late-night radio show. Most of the letters read on the show are from a frequent sender called "Chi-chan." Chi-chan, whose real name is Chiriko, has fallen in love with the DJ host Joutarou and his sweet-talk. She becomes friends with Kaname, another well-known mail sender on the show. Wanting to thank Joutarou, the two go down to the radio station and meet Yume, the scriptwriter. Kaname says that she wants to be a radio writer too and Yume lets her have a script of the broadcast, shocking Chi-chan and making her realize that Joutarou's sweet words were all scripted, crushing her fantasy him. Hating Kaname for crushing this fantasy, she sends her to Hell. Afterward, she returns to her fantasy, refusing to accept that Joutarou's words are scripted.

知里子热衷于DJ丈太郎的电台节目。一天知里子是“明信片达人的小叽”在班里传开来，变得引人注目，但…。

Une émission de radio devient le centre d'attention d'une classe depuis que la lettre d'une des élèves a été lue en direct. Celui ci va se connecté au courrier des enfers.

DJ丈太郎のラジオ番組に夢中になっている知里子。ある日“ハガキ職人のちーちゃん”が知里子だということがクラス中に広まり、注目の的となる。