Kimi wa Sora no Subete

When her mother remarries, Rika finds herself unable to shake a quiet unease about the life her mother has chosen. Determined to see the truth with her own eyes, she travels to the city where her mother now lives, hoping to confirm that the woman who raised her has truly found happiness in her new marriage. There, Rika's visit takes an unexpected turn when she crosses paths with Seiya, a boy her own age. Effortlessly popular and possessing a presence she finds strangely compelling, Seiya leaves a lasting impression on her—until she discovers the astonishing truth behind their meeting. Seiya is the son of the very man her mother married. What seemed like a chance encounter now ties the two of them together in ways neither could have anticipated. Was their meeting merely a coincidence, or is something greater at work? Rika's simple quest to check on her mother's happiness becomes the beginning of a far more tangled story.