Gekijouban Kara no Kyoukai Movie 6: Oblivion Record

"Even if you cry and apologize, I won't forgive you!" Shiki Ryougi, who has been training at Aozaki Touko's office, suddenly receives a mission from Touko one day. She is tasked with investigating mysterious incidents occurring at Reien Girls' Academy, her own school, where the culprit is rumored to be a fairy. Shiki heads to the academy, quiet due to winter break, to conduct her investigation. However, the so-called "secret weapon" prepared by Touko for Shiki, who cannot see fairies, turns out to be—her rival (in love)? Ryougi Shiki.