嬢王vs夜王　甘美なる夜の遊戯

First crossover between the series Jou-ou and Yaou (Queen of the Night and Night King). Hirona, a former top hostess and now a popular film actress, is involved in a sex scandal. She becomes obsessed with the actual N°1 host, Jin. Jin and his patron, Ichijo Shino, plot to put her back in the "Queen of the Night" position and gain complete control over the neon district.