At the private Bell Girl Academy, the strength of tongue lesbianism is the sole criterion determining the school's hierarchy. Now, an overwhelmingly powerful transfer student has arrived—her name is Iroha Meru. Known as an exceptionally skilled perverted tongue lesbian, her previous school was completely crushed under her prowess. Astounded by her abilities, Bell Girl Academy's tongue lesbian instructor, Nii Na-sensei, arranges a match between Iroha and the current top-ranked student, Izumi Nozomi. But this clash quickly escalates beyond a simple battle, evolving into a full-blown, three-way perverted tongue lesbian saliva battle as Nii Na-sensei joins in. Expect intense heat and dramatic developments.