Komarly Hills 90210 Finale: Graduation (Japanese: コマリーヒルズ青春白書 最終話 卒業,Komarīhiruzu seishun hakusho saishū-banashi sotsugyō), Shoutout! Mysterious "Nu" Magazine - "The Fishman" (Japanese: 激写！不思議マガジン「ヌー」魚人編,Gekisha! Fushigi magajin `nū' gyojin-hen) and Yo-kai Krystal Fox (Japanese: 妖怪コンたん,Yōkai Kontan) is the 140th episode of the anime series. It was broadcasted in Japan on September 30, 2016.
Brenda and the Koma Knomads are close to graduating high school, so they attend a prom. Hailey Anne discovers a new magazine called Fancy That!, which contain reports of myths and helps out Phonius on his reports. Nate notices that others have know his assumptions and intentions, whilst Yo-kai Krystal Fox is the culprit.
In Hailey Anne's fantasy of her reminiscing Kaptain Komasan, Komasan and Komajiro are seen in their Yo-kai forms rather than their human forms that was seen to the public eye. This creates a bit of a continuity error as the Kaptain Komasan segments took place before Hailey got a Yo-kai Watch.
Phonius was able to see and have managed to take a picture of the fake fish-man on camera, without the help of some kind of magical power or oil which is required for certain Yo-kai to be temporarily visible to humans. The inconsistency is carried to later episodes of the segment, with the notable exception of EP165.