Yuki Harada and Ren Aoki were the kind of high-school sweethearts people admired. They grew up together, married young, and raised two children. Then one misunderstanding cracked everything. Years of silence, stress, and pride finally ended in divorce.

The night they sign the papers, both wake up in their seventeen-year-old bodies on the first day of their second year. Their memories of marriage, their children, and their breakup are still sharp. Their youth isn’t.

Now they have a second chance they never asked for. Ren wants to fix every mistake he made. Yuki wants to guard her heart after already losing everything once. They keep telling themselves they won’t fall in love again.

But fate, nosy best friends, school festivals, and old feelings make it harder to stay apart than they expected.

Can two people who already loved, married, fought, and divorced learn to choose each other again?
Or will their second chance repeat the heartbreak that tore them apart the first time?