San Nen Sa

Mizuki and Kazuya have been inseparable since childhood, yet a simple three-year age gap stands quietly between them. While three years might seem like a trivial difference to most, it creates an invisible barrier that prevents the two friends from truly sharing their formative experiences. When one is navigating the early stages of youth, the other has already moved past them, leaving each to face the milestones of growing up on slightly different timelines. This gentle slice-of-life narrative follows Mizuki and Kazuya as they journey from their earliest days together into adulthood. Rather than focusing on grand conflicts, the story explores the subtle emotional distance and enduring bond shaped by those three missing years. It examines how two people who have always walked side by side experience the world just out of sync, capturing the quiet nuances of their lifelong connection. Originally gaining widespread popularity as a beloved series on Pixiv and Twitter, this touching tale of friendship and time has been collected and expanded for official publication on Gangan Pixiv.