She is a hunter trained by an international organization, and she is his strong-hearted but innocent-looking classmate whom he has been secretly in love with for six years. She has experienced ups and downs in her life, but she still looks cheerful, but there is no one in her heart. The accidental encounter sparked feelings again, but she would rather he hated her than grieve for her departure. The truth revealed that she had an unexpected encounter in a foreign country, and she actually lost her memory like crazy! Will the two get back together or are they destined to be together?