Darren belongs to the Poppin tribe, beings sustained by dance within the story's fantasy world. He presents a boy-like figure with distinctive ears that sway during movement, occasionally interfering and drawing focus. His personality maintains a relaxed, unhurried pace, offering a calming and healing presence comforting to others.

As a Poppin, Darren shares a unique paired bond with the human girl Konatsu Tomodate, sensing and resonating with her emotional state. The tribe's survival hinges on human girls uniting their hearts through dance to avert world collapse. Darren actively supports and encourages the girls in this mission, serving as both guide and dance partner. His interactions focus on understanding and reflecting Konatsu's internal struggles, particularly her difficulty expressing true feelings.

Darren's development intertwines with Konatsu's emotional journey. As she overcomes hesitations and learns open communication, his role adapts alongside. His persistent dancing, despite physical quirks like his ears, mirrors the girls' determination to master their collaborative routines. The culminating act sees Darren and his tribe successfully aiding the girls in performing a unified dance. This act averts the world's crisis and revitalizes the Poppin tribe, confirming Darren's fulfillment of his purpose through the partnership with Konatsu and their collective triumph.