Two years ago, when Shinohayu had only 3 chapters published, Ritz already estimated that the elementary school part of the story would cover at least 4 volumes but possibly more. In the end, it will be 6 volumes. Since I like the pace of Shinohayu so far, I'm very happy with this.
No one can say how long the middle school part will be however, back then Ritz also stated that, if she could, the whole elementary-middle school part would last 100 volumes. Obviously a wildly exaggerated number but still, it comes to show that Ritz is in no hurry to reach the Interhigh.
Enjoy:Shinohayu ch28 (Mega)
Shinohayu ch28 (Mediafire)