F2F Transformations & Body Swaps In Anime Series

Episode 10 Fighting an Enemy you Cannot See Later, Jou announces a class trip to a shrine, but Sasami ends up catching a fever and is unable to go. Wanting to experience the trip for herself, Sasami uses a spell on Tama to have her assume her form so she can go in her place alongside Kagami and Tsurugi whilst Sasami observes what Tama does.