ないしょのプリンセス

Kana and Kouki were inseparable childhood friends, starring as Snow White and Prince Charming in their kindergarten play, dreaming of a future together. But when Kouki moves away to Hokkaido at age six, promising to return and marry Kana, their bond is tested by time and distance. Seven years later, Kana, now in middle school, has held onto that promise, but Kouki's long-awaited return brings unexpected changes and challenges. As they navigate misunderstandings, hidden feelings, and the complexities of growing up, Kana begins to question what their connection truly means. (Summary by Grok 2)