Twenty-Five Twenty-One depicts a story from 1998 to 2021. In 1998, twenty-two and eighteen meet for the first time in an uneasy year as the whole world shook and called each others' name and when they became twenty-three and nineteen, they hurt each other. In the year of twenty-four and twenty, they relied on each other, and they loved only when they were twenty-five and twenty-one.