The heroine, a sophomore in high school, was appointed as the math class representative. She never went to the back row of the classroom but frequently went to the back row to collect homework. When she was about to trip over a classmate in the back row, she was caught by the indifferent male protagonist. The male protagonist said that the way to thank her was to copy the heroine's homework, but the good student heroine refused.
The male protagonist thanked the female protagonist for making way for his sister at the food stall, insisted on handing in homework, listened carefully to the female protagonist's lectures, and his grades continued to improve. The heroine encounters a family accident, is late in paying tuition, has no money to buy materials, is accused by classmates of stealing materials, and is accused by a shop owner of stealing notebooks. The hero gives the heroine study materials, stands up for the heroine, helps the heroine clarify the facts and prove her innocence, and works with the heroine during the summer vacation.
The male protagonist was lured by his family to study abroad in the name of travel, and was separated from the female protagonist. The female protagonist in her senior year of high school endured lovesickness and concentrated on studying, and was admitted to the university she had agreed with the male protagonist before. During college, she refused the pursuit of other boys and waited aimlessly for the male protagonist.
After graduating from graduate school, the heroine returns to her alma mater to teach, and reunites with the hero who set up a psychological counseling room, HE.
