Oh My Goddess! Omnibus 5, Vol. 13-15

Skuld, who loves to overengineer, has trouble understanding the simple appeal of a bicycle—until Sentaro, a boy in town, teaches her how to ride one. But Skuld is new to understanding love as well . . . Meanwhile, the girl on campus who can never get enough love (and worship), Sayoko Mishima, is willing to sell her soul to help demoness Mara defeat Belldandy . . . and turn Nekomi Tech into a literal castle where Queen Sayoko reigns supreme!