Introduction: In April, on the day of the teacher training began, a special guest visited Eunjo, a high school Korean language teacher.Se-ah was the class president who was in charge of her class when she first became a teacher. Except for her exceptional appearance and her role as a class president, she had no choice but to remember it in particular.Eunjo who had closed her heart well because of the miserable farewell she had just gone through, and Se-ah, a reckless younger woman who boldly goes straight to Eunjo.The story of two people ripening with spring during a month of teacher training....