Part 1: Whisper informs Keita that a kappa lives in the river, mistaking a broken plate for the creature and completely ignoring the Yo-Kai Nogappa who vies for their attention. Part 2: After Keita uses the toilet in school, his friend and crush Fumi reveals this fact to the whole class, embarrassing him. Whisper reveals a Yo-Kai is to blame, revealing the Yo-Kai Bakuro-baa, who makes people tell secrets unwittingly, possessing Fumi. Keita gives chase, and after Whisper reveals how to use Yo-Kai Medals to summon the befriended Yo-Kai with the Yo-Kai Watch, Keita calls on Jibanyan, but Bakuro-baa makes him reveal how big a fan he is of the idol group NyaKB, making him run away in embarrassment. Keita then calls on Nogappa who manages to defeat Bakuro-baa, but only because legends of the kappa are so famous that everyone knows his secrets. Part 3: After a big test at school, Keita meets Fumi on the way home and sees that she is upset, but will not tell why. Whisper tells Keita to call on Bakuro-baa to make Fumi reveal that she is afraid of what her mother will say because she did not get a perfect score. Keita decides to let Bakuro-baa remain a little while longer so Fumi can talk to her mother, who is not at all worried about the test scores.