Oh My Goddess! Vol 5

From the Dark Horse edition

Ever since a cosmic phone call brought the literal young goddess Belldandy into college student Keiichi's residence, his personal life has been turned upside-down, sideways, and sometimes even into strange dimensions! When Belldandy learns that traditional Japanese custom dictates a woman make homemade chocolate for her love on Valentine's Day, she vows to make this a V-Day to remember. When troublemakers extraordinaire, Urd and Mara toss themselves into the mix, it's instant hot chocolate; but not as hot as the situation Keiichi is in when the Third Goddess splashes into his life-Urd and Belldandy's "genius" of a younger sister, Skuld! Plus notes and commentary, a message from creator Kosuke Fujishima, and your letters!

Source: Penguin Random House API