Hi i want to know if this anime has some manga after the 25 episode?

As far as I know, there is no manga after the first few chapters. The entire series was based off of a novel, rather than the stereotypical manga. The official manga came at a later date, based off of the novel, as well. The manga itself jumped through the first few episodes, and a bit near where the first season ended, and that was it. So no, there is no other manga, as far as I know. However, there is the original novel that it's based on, but that is zaidi directly aimed towards the romances with each girl in the first season, I believe.