Many universities in Japan offer animation majors. As you mentioned, comics and animation are two majors. Generally, some of them can be chosen. Choosing a school does not necessarily reduce your own needs. If recommended, these are good:

1, Kyoto University: Department of Media Performance, Department of Art, Department of Design, Department of Comics (specializing in animation), etc.

2. Digital Hollywood University: specializing in images, 3DCG, graphic design, animation, web design, games and programming, business, and cutting-edge media performance.

3. Tama University of Fine Arts: painting, sculpture, technology, graphic design, production design, environmental design, information design, art and comprehensive design.

4. Kobe University of Art and Engineering: Art and Engineering Comics.

5. tokyo institute of technology: The Department of Fine Arts includes photos, video, design, interactive multimedia, animation, games, comics, etc.

6. Kurashiki University of Science: The Department of Art includes art design and media imaging, among which media imaging includes animation CG games and comics.