As the one-week trial period gets underway, Aoi spends his days alternating between Umi and Aika, discovering more about each girl through shared time and conversation. Both express their growing feelings for him, and Aoi feels an unexpected pull to make them both happy. Yet the thought of eventually choosing one and disappointing the other weighs heavily on his mind. With each passing day the emotional stakes rise, leaving him uncertain how to move forward without causing hurt.