Fairy Tail x The Seven Deadly Sins Christmas Special

When Meliodas spontaneously asks Elizabeth if she wants a Christmas present, she requests a talking cat, perturbing Hawk. As Hawk states that there is no such thing as a talking cat, they encounter Happy, whom is astonished by the talking pig. As Elizabeth and Meliodas marvel upon the sight of the talking cat, Hawk feels neglected and wanders off into Magnolia. Meliodas heads out and searches through the town, asking various patrons (including Erza Scarlet) about Hawk. After searching a bit more, he finally finds Hawk, who is donning a pair of cat ears atop his head. After Meliodas drags Hawk over to Elizabeth's location, they come to find that she has also gone missing.