A child's marble collection becomes the centerpiece of an intimate family story about growing up and letting go. Yocchan treasures each glass sphere, building meaning and memory into simple playthings that line his world. When circumstances force him to part with his beloved marbles, he confronts what it means to hold onto childhood while moving forward into something new. The special unfolds with quiet emotional depth, capturing the bittersweet weight of small moments that shape who we become. Director and animation bring genuine tenderness to a child's perspective, making his attachment to these objects feel neither trivial nor melodramatic, but genuinely important. The story breathes space for reflection, letting viewers sit with the character's feelings rather than rushing toward resolution.