A young boy named Kun struggles to adjust to the arrival of his baby sister, Mirai. He retreats into a fantastical family tree that transports him through time, allowing him to meet his relatives at various stages of their lives. He encounters his mother as a young girl and his sister as a teenager, gaining a new perspective on their experiences and the importance of family connections. Through these adventures, Kun learns valuable lessons about empathy, patience, and his own place within his family's history.
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In a quiet suburban neighborhood of Yokohama, a modest house is built around a towering tree that seems to watch over the family living within its branches. The everyday rhythm of play, school runs, and quiet evenings is gently disturbed when a new member arrives: a baby sister whose name means “future.” The arrival brings a wave of attention that shifts the household’s focus, leaving the elder child to wrestle with feelings of displacement and curiosity about his changing role.
Kun, a bright‑spirit four‑year‑old, becomes the emotional core of the story. He navigates the bewildering mix of love and rivalry that a newborn often sparks, while his loyal dog, Yukko, provides a touchstone of comfort and wonder. As he grapples with jealousy and yearning for his parents’ affection, the house’s unique tree begins to reveal its quiet magic, opening fleeting windows to moments beyond the present. Through these glimpses, Kun encounters relatives at different stages of their lives, from a youthful mother to a teenage sister, each encounter offering a subtle lesson about the threads that bind a family together.
The film’s tone balances gentle humor with a poetic sense of wonder, inviting viewers into a world where the ordinary and the fantastical coexist seamlessly. The animation style captures the soft glow of domestic life while allowing the tree’s secret pathways to blossom into vivid, dream‑like sequences. Within this richly textured setting, Kun embarks on an internal journey of empathy and self‑discovery, hinting at the deeper connections that shape our identities without revealing the specific paths his adventure will take.
Last Updated: August 10, 2025 at 02:11
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