Shakugan no Shana S: Shana (OVA 1) (Part 3)

This third and final part involves around Shana started to wobble for an instant before collapsing in Yuji's room and began to think about Reshuffle possibly having a side effect. The two switched back after Shana and Yuji found and used the Reshuffle Tresure Tool. However, Yuji himself was succumbed to a severe stomachache from all the ice cream Shana had eaten while in his body and ran to the toilet, leaving Shana alone with Alastor.