Yo-kai Watch Shadowside (Japanese: 妖怪ウォッチ シャドウサイド, Hepburn: Yōkai Wotchi Shadōsaido) is a supernatural anime series produced by OLM.

But as he notices his sister frequently comes back home late, he decides to stalk her, only to find out she is running a Yo-kai detective agency with her friends Bruno and Cole to investigate supernatural phenomena.

[8] The anime officially premiered on all TXN stations in Japan, including TV Tokyo and TV Osaka on April 13, 2018, replacing the original Yo-kai Watch anime series in its timeslot, with the first and second episode premiering on the same day as a one-hour special.

[9][10] The first opening theme is titled "Toki o Matou" (時を待とう, Toki o matou, "Waiting for the Time") by Hard Birds while the first ending theme is titled "Funky Boogie Buba" (ファンキー・ブギブバー, Fankī Bugi Bubā) by King Cream Soda.

Hyui Hyu") by Hard Birds and "Oyasumi Sanka" "Holiday Hymn" (お休み賛歌) by King Cream Soda.