Movie
Description
Kun-chan is a four-year-old boy, the eldest child who initially enjoys his parents' undivided attention. The arrival of his newborn sister, Mirai, shatters his security, sparking jealousy and feelings of neglect as his parents focus shifts. His mother returns to outside work while his architect father becomes the primary caregiver working from home. Kun-chan expresses his frustration through tantrums, attention-seeking actions, and mischief directed at his sister and parents.

He finds solace in a magical garden within the family's courtyard. Overwhelmed by emotion, he retreats there, encountering figures from his family's past and future. He meets the family dog, Yukko, temporarily human, who shares his sense of being overlooked. He interacts with his sister Mirai as a teenager visiting from the future. He encounters his mother as a young girl, witnessing her childhood struggles and messiness mirroring his own. He connects with his great-grandfather as a young man returning from war; adventures like horse and motorcycle riding help Kun-chan conquer his fear of learning to bicycle. Finally, a sullen teenage boy warns him against boarding a train, leading to a pivotal moment of self-recognition at a bustling station where Kun-chan confronts his identity within the family lineage.

These magical encounters prompt his emotional growth. Seeing his mother's childhood fosters understanding of her current parenting challenges and their shared experiences. His adventure with his great-grandfather builds the confidence needed to master bicycle riding. The journey to the train station forces him to acknowledge his place within the interconnected web of his family's history, choices, and relationships. Witnessing his parents' struggles and understanding generational sacrifices cultivates empathy and belonging.

By the conclusion, Kun-chan's intense jealousy toward Mirai lessens, replaced by a sense of responsibility and affection as her older brother. He begins to accept his role within the evolving family dynamic, moving beyond seeing himself solely as the center of attention. This shift reflects a newfound understanding of the love and challenges inherent in his family relationships, allowing him to embrace his position as both a son and a sibling.