Sequels are often a mixed bag. For video games, theyre often an improvement on what came before. In movies, they usually fall short unless they really do something special. With manga, it can go either way. Handa-kun, the prequel to the seinen calligraphy manga Barakamon, is a solid, well-liked series. Boruto, the shnen successor to Naruto, fell from grace as its story went on.