Shino falls in love with a boy named Sena after seeing him play the guitar. They share all of their firsts together as a delicate teenage romance blooms, but the relationship ends when Sena transfers to a school in Tokyo. Years later, Shino is now a college student in Tokyo, still unable to forget her first love. When she unexpectedly reunites with Sena, she finds that the innocent boy she once knew has changed into a different person entirely, now appearing as a cocky and worldly womanizer. Despite this, the old spark between them remains, and Shino must decide if she wants to fall in love with the man Sena has become, while confronting the question of whether she can truly forget their past. The story unfolds in a contemporary college setting, focusing on the emotional turbulence of rekindled love and the bittersweet process of confronting unresolved feelings from ones youth. As they navigate this second chance at romance, the narrative explores how people can transform over time and whether a love story can begin again in a new chapter of life.