The World God Only Knows, Volume 18 (The World God Only Knows #168-178)

During the eve of the Mai Fest, Keima found out that Chihiro was not a retainer of a Goddess. Rejecting her, Keima broke Chihiro's heart, and especially the trust of her supporting best friend, Ayumi. Even though Keima was depressed, he is cheered up by none other than Tenri. Keima goes back to the conquest and searches into the history of Mai High and the Festival for some clues about the Goddesses. After finding out about the Goddess' past involvement and also the location of the Vintage base in the Human Realm, Keima is ready for the Mai Fest. But he is not only ready for the Festival, but also ready to conquer Ayumi, the last candidate of the final Goddess. But a shadow of Vintage appears, bringing a bad omen to Keima's conquest... will Keima be able to bring out the last Goddess before Vintage starts acting?