Wieso hatte Seisa ihre Todeskunst nicht gegen Otone eingesetzt? Und wozu sind Erinnerungen fähig?
After Otone runs off, Eruna becomes shocked when she notices some strange scars on Seisa's back. The next day, Otome apologises to Eruna, who asks her to help her train for the upcoming midterm battles. As Seisa stays away from the battles and shuts herself in, her Killing Art ability starts going out of control, causing temporary cracks to appear around the school. Investigating the school's photography club, Eruna stumbles into a different dimension and comes across Bimii. He explains that during her first year, Seisa was betrayed by the photography club upperclassman she admired, who seriously injured her with her ability, prompting Seisa to use her Killing Art to seal the clubroom away and shut herself in. With Seisa's Killing Art growing more unstable by the minute, the school itself starts becoming warped, with Eruna and Bimii falling through a sudden crack.
クリスタルを破壊され座り込む星鎖と、そんな星鎖を冷たく見下ろすおとね。そこで何が起きたのかわからないエルナは、二人に声をかけようとするが、おとねは何も言わずに走り去ってしまい、星鎖もエルナを遮りこれ以上私に構わないでと告げる。そんな中、ミカグラ学園ではルーキー戦に続く大きな対抗戦である中間試戦が始まろうとしていた。
