Twelve Days of Squidmas by K.L. Hiers

Jack Marsh has twelve days to pull off the perfect Christmas.

Even though his beloved grandmother has just passed, his rotten family is expecting him to host in her place. He already hated this time of year, and now he has to decorate, bake cookies, wrap presents, and create a delicious holiday feast.
Enter Xorvash, an interdimensional tentacle creature from another plane of existence. Thanks to a minor kitchen mishap, Xorvash comes crashing into Jack’s life and promises to do the impossible. Jack suspects Xorvash’s interest in him goes far beyond merely wanting to help him deck the halls, and he’s having trouble resisting Xorvash’s unique charms. With some luck and a sprinkle of holiday magic, Jack might get some sweet tentacle romance for Christmas—plus a little miracle or two.