Ten years ago, the heroine and her brother were chased by unknown people while traveling in Thailand. They accidentally fell into the water and were rescued by the hero.
On that night of blinding lightning and thunder, they spent two long nights clinging to each other. He said that he was about to enter university and that he would be a designer in the future. He led her to look forward to a bright future. He gave her a blood-colored agate necklace and then made a five-year appointment for them.
Five years later, the heroine went for an appointment, only to find that everything seemed to be a dream.
For the next five years, the heroine kept her appointments on time every year until the 10th year.
