It's a Rumic World: 50th Anniversary Weekly★Shonen Sunday
- Cast: Satsuki Yukino, Kappei Yamaguchi, Fumi Hirano, Toshio Furukawa, Megumi Hayashibara
- Duration: 3 minutes
- Genre: Animation, Comedy
- Rating: 8/10
- Release Date: 2008-07-30
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.
