Ep. 13: Teenagers play Hyakumonogatari Kaidankai in an abandoned school, revealing a vanished friend and a mysterious voice.

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A group of teenagers enters an abandoned school to play Hyakumonogatari Kaidankai, lighting one hundred candles and extinguishing one after each ghost story. Kouki narrates the 99th tale, confessing he previously played this game where the 99th and 100th candles were extinguished simultaneously, causing the boy meant to tell the final story to disappear. When Akito questions the fate of the missing peer, Kouki reveals he has just completed the 99th story and invites the group to confront the vanished boy directly. He concludes by mentioning a voice that said, "See you after the next hundred." A mysterious figure blows out the 99th candle, inducing panic. The kamishibaiya then appears, stating this is the story of everyone who had a dreadful experience after a hundred stories were told, before the 100th candle is extinguished.