After being cruelly rejected by her first love at 17, Shion grows into a successful beauty consultant at 29, but her trauma with romance remains. When she’s mysteriously sent back to 2010, she reunites with the boy who hurt her and decides to use her future makeup skills to change her past (and herself).

Shion begins her second high school life, navigating awkward and thrilling moments with her first love, Hayato, while searching for a way back to her original timeline. She also notices a special connection forming between Hayato and her friend Mizuki, and enlists help from a supernatural-savvy classmate to understand the time-slip mystery.

Shion faces her old summer camp trauma as she’s paired again with Hayato, while also running into Mizuki’s current boyfriend, sparking new worries and reflections on past crushes. She tries to update her style with a shopping trip, all while anticipating the challenges of reliving her camp experience.

On the first day of camp, Shion realizes her feelings for Hayato remain as strong as ever, but guilt over Mizuki’s feelings complicates things. Hayato increasingly seeks time alone with Shion, culminating in a private fireworks moment that stirs deep emotions and tears.

Mizuki struggles with her feelings for Hayato and confronts Shion, revealing the loneliness from her childhood and the special bond she once shared with him. By opening up to each other, Shion and Mizuki promise to honestly express their feelings to Hayato, leading to a tense one-on-one moment between Shion and Hayato on the final day of camp.

On the last day of camp, Shion finally confesses her feelings to Hayato, but fear of being sent back to her original timeline makes her pull away. As new complications arise with classmates approaching and Hayato’s worries growing, Shion seeks guidance from Kaori to figure out how to navigate love in the present world.

Shion confides her time-travel secret to Mizuki, who reveals that Kaori’s charm had been meant to help her confess successfully 12 years ago. Later, Shion tells Hayato the truth, and the two begin testing the boundaries of their relationship—eventually holding hands, embracing, and moving closer as the mysterious light no longer interferes.

Relieved that kissing doesn’t trigger time travel, Shion and Hayato grow closer, though Hayato confesses his insecurity about their mental age gap and pushes Shion out of her comfort zone. Their first double date with friends is so happy that Shion starts forgetting her need to return to the present, until Kaori suddenly appears, hinting the time limit may be near.

Realizing her presence is changing everyone’s lives, Shion decides she must return to the present and finally tells Hayato the real reason, asking him for time to choose. After an emotional night with Mizuki, Hayato seeks advice from someone important before giving his answer.

To send Shion back, Hayato tears up the cursed photo, but the three time-slip together to the moment the picture was taken—before the spell—letting Hayato confess freely; Shion then chooses to have the spell placed again and makes one final wish. Their friendship and love face a last, bittersweet test that decides how their story ends.