First Yo-kai Watch 4 screenshot, character art

Level-5 released the first screenshot for Yo-kai Watch 4, along with a few pieces of character art. In the game, players will travel across time and space between three different worlds. These include the worlds of Nathan Adams, Natsume Amano, and Shin Shimomachi. Shin is featured in the Yo-kai Watch: Forever Friends movie, which debuts in Japan on December 14.

I found the early prototype screenshots for the first yo kai watch games on a website it has stuff like old yo kai designs old character sprites/models and old map designs

Yo-kai Watch 1 for Nintendo Switch Shows Off How Nate Gets His First Titular Watch - Siliconera

First Artwork And Screenshots For Yo-Kai Watch 4 Emerge – NintendoSoup

Level-5 Provides Additional Yo-kai Watch 4 Details - RPGamer

Youkai Watch Concept Art & Characters

Yo-kai Watch 4++ - Japanese New Yo-kai Art and Gameplay Screenshots - NintendObserver

Level-5 Provides Additional Yo-kai Watch 4 Details - RPGamer

Yo-kai Watch 5: Tales from the Great Beyond, nyan!!!, Fantendo - Game Ideas & More

Top 5 Yokai Watch Games!

Art (Yo-kai Dimmy fanart)

Japanese Nintendo

Yo-kai Watch 4++ English Fan Translation [Yo-Kai Watch 4++] [Works In Progress]

Yo-kai Watch 4 Hands-on Impressions - : Japan-based Nintendo Podcasts, Videos & Reviews!