A summer afternoon hit by heavy rains due to the recent abnormal weather. Ooki, a teacher, and his student Rin, who happened to be with him, decided to take refuge at his house for a while. While rubbing Rin, who was shivering from the cold, to warm her up, Ooki couldn't help but notice her transparent, developing body and feminine softness. Rin smiled innocently at Ooki and said, "You know, I've always liked you, teacher," and leaned closer to him...