Whisper wakes up late but sees Keita and Jibanyan are ready to have a sprint at school today because of a TV show he watched the previous night. However, everyone in school is giving up on tasks in the middle of doing them, prompting Keita to believe they are posessed by a Yo-Kai and finding Tsuzukanasō. When Fumi is possessed, Keita gets Nagabana to counter Tsuzukanasō's possession, forcing Tsuzukanasō to give up after fighting Nagabana's powers. However, the next day Jibanyan and Keita have already given up getting to school early. Some time later, Keita decides to stay up all night, and while in school he nearly falls asleep. Whisper soon realizes that everyone in class is tired but cannot sleep, and they discover the insomniac Yo-Kai Fūmin has decided to keep everyone awake. Keita gets Baku for help, but just as Baku appears to not be able to counter Fūmin's abilities, it is revealed to be all in Fūmin's dreams. Komasan enters a café to get out of a sudden rain storm and falls head over heels in love with a woman who is also in the café. He attempts to impress her through imitation, but finds the taste of coffee horrible.
<妖怪不行僧>
妖怪不行僧喜令被附身者萌放棄之心,一眾同學慘被戲弄下,景太唯有派長鼻怪與之周旋,兩妖怪激戰一番,不行僧終被長鼻怪冗長說話中的一個謎團壓服,乖乖成為景太的朋友。
<妖怪不眠怪>
妖怪不眠怪喜以不眠術折磨被附身者,連景太亦受害。景太派專食夢的黑應戰,不眠怪在夢中力壓黑,但在現實世界卻不堪黑一擊。不眠怪雖被收服,但景太已被打亂睡眠節奏,苦頭依然吃個不停。
<戀愛與詩句與咖啡 第一杯>
哥瑪先生為避雨而走進茶室,內裡一位女客頓成他的目光焦點。初嚐咖啡的哥瑪先生雖被苦味折騰,但心跳加速的緊張感更加是全新體驗。如是者,哥瑪先生的生命開始與茶室(女子)連成一線......
I compagni di classe di Nate lasciano il loro lavoro a metà e tutti sono colpiti dall'insonnia grazie a D'wanna e Insomni. / Komasan s'innamora.