Half of the original anime DVD will adapt the special bonus Magical Pâtissier Kosaki-chan manga shorts that will be in the 19th, 20th, and 21st volumes. The shorts feature Yui, and the anime's website teases a new magical girl as well. The other half of the original anime DVD will adapt Komi's "Shinkon" (Newlywed) manga bonuses in the manga's fourth volume (Kosaki) and the booklets bundled with the 16th (Marika), 17th (Tsugumi), and 21st (Chitoge) manga volumes. The excerpt reads, "Dinner is ready. And so is the bath, so which do you want first?"
This spin-off has no bearing on the main story in slightest, it's just an excuse to see the girls naked for fanservice pandering.