Girlfriend, Girlfriend 13

Naoya has finally achieved first on the grade during his exams and proved his resolve to make this polygamy work! Seeing his efforts, Saki also decides to take her steps forward, too! First, she wants to reveal their relationship to the whole class?! Next, all four of the girls will be going on individual solo dates with Naoya?! What kind of answer will Saki reach after seeing Naoya spend time with the others?!