I've been dating Rei for about five months. Our school is very strict about academics and sports, so we're busy with both studying and club activities. The only time we could be together was when we went home together. If it was summer vacation, we could make time for a date! On the way home, we made plans to go to the beach, the aquarium, and the amusement park. We held hands and even kissed... and then we had sex for the first time... We were both excited and looking forward to the start of summer vacation. However, because Rei's grades were poor in the first semester, she was forced to attend extra lessons every day...