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Birthdayfreak67: Considering that the Series is already confirmed to get a Season 2 of the Anime, it means that it is popular enough to get one. Which means that the chance of the Manga getting "Axed" is really low.
Also, most of the time, unless because of poor sale or unpopularity, a Manga series which got adapted from a Novel is more likely to continue the plot which has been covered in the Novel until the end. So, i doubt they would leave the Manga story incomplete without finishing it, especially because of the other Spin-off and Side-Story stories this series has (i.e., prequel "Zero" having both Novel and Manga adaptation, "Nichijou" being a comedy 4-koma series and finally the recently started "Gakuen" which is based on a bonus spin-off story from the novel).