Elsa gets fed up with Anna gloating about her relationship with Kristoff. She is sexually frustrated so she takes it out on the innocent couple. Elsa uses her powers to shrink them down to a size that she can fit inside her. Kristoff in her swollen pussy, and Anna in her tight asshole. Read the chapter to find out what happens and look out for the Olaf part at the end. Link posted below.
https://www.patreon.com/posts/side-chapter-29500614