In the world of design, where precision and perfection often reign supreme, Taekhan Yun stands out as a beacon of tenderness and imperfection. His work, a testament to the power of slowness and humanity, challenges the notion that design must be a closed, solitary act. Instead, Yun invites us to embrace the beauty of imperfection and the richness of collaboration, particularly with children. What makes Yun's approach so captivating is his ability to transform children's drawings into active tools within the design process, allowing their imagination and creativity to shape the final form of each project. This is not merely a romantic idea but a practical and profound method that destabilizes fixed design logic and opens space for other forms of attention and relationships to flourish. In this article, I will delve into Yun's practice, exploring how he finds the human trace in a hyper-productive design culture and how his work resonates with a quieter way of design thinking, where vulnerability is not an aesthetic layer but a method for slowing down and allowing contradiction and softness to remain present without being resolved too quickly. By examining his projects, such as the Chair for Kids and Birdhouse by Kids, I will analyze how Yun's approach expands our thinking about design, promoting slowness, imperfection, and human emotion as alternative possibilities for design. Furthermore, I will discuss how Yun's work challenges the notion that design must be a closed, personal act, opening it up into something shared and evolving. Through this analysis, I hope to shed light on the importance of tenderness and imperfection in design, and how they can create a healthier and more affirmative world.