Nonami and "Emi" are two high school girls who are lovers. Nonami is called by Emi after the student council. To her surprise, Emi secretly throws a birthday party in the classroom. It's supposed to be a lovey-dovey girls' night out with sweets and pasta, but Emi makes Nonami drink vomit and pee, eat insects and poop, and turns it into a birthday party covered in excrement! The two, who are connected in a master-servant relationship, feel the pleasure of being soiled and enter the ecstatic world of lilies. XCREAM DUGA