No Game No Life, Vol. 11 (light novel) - Yuu Kamiya

HOW DO YOU BEAT THE GAME OF LOVE?Sora, Shiro, Steph, Jibril, and Emir-Eins find themselves somewhere completely unfamiliar: a Spratul, home of the ninth-ranked Ixseed, the Fairies. Next thing they know, a Fairy named Foeniculum shows up and announces that unless they partner up into couples, they’ll be trapped there forever…Oh, and the whole thing is being livestreamed. To emerge victorious, Sora must choose one of the four ladies as his girlfriend—but what if they simply pair off with one another and leave him in the lurch?!