It's a Rumic World: 50th Anniversary Weekly★Shonen Sunday
Japanese title: It's a Rumic World: 50th Anniversary Weekly★Shonen Sunday
Type: Special
Episodes: 1
Source: Manga
Genres: Comedy, Sci-Fi
Studios: Sunrise
Producers: Shogakukan
Duration: 3 min
Rating: PG-13 - Teens 13 or older

The characters from Ranma 1/2, Urusei Yatsura, and Inuyasha all gather together in a short crossover to introduce the 50th Anniversary Weekly Shonen Sunday "Rumic World" Museum opening, celebrating Rumiko Takahashi's manga work.