In After Yamiko, Regina claims that if Yamiko attempts to hurt the Cures again, she will defeat her by sitting on her and forcing her to listen to One Direction.
In You Have a Match, Finn uploads old camp photos of Savvy and Mickey in handmade One Direction T-shirts.
Anna from The State of Grace has a One Direction poster on her bedroom door, usually hidden by her bathrobe.
In The Pants Project, Jacob's mom is a huge One Direction fan who especially loves Harry Styles.
Tom Gates: In Biscuits, Bands and Very Big Plans, Tom gets a song by "One Dimension" stuck in his head after hearing many of his friends claiming to like them, in particular their song "Let's All Sing Together".