Kiki serves as a central character in the OVA, forming an inseparable duo with his twin sister Lala within the Little Twin Stars franchise by Sanrio. As Lala's younger twin brother, this familial bond defines his core relationship. Together, Kiki and Lala stumble upon a mysterious egg that hatches into a baby dragon they name Will, committing to raise it jointly. The dragon's explosive growth and primal instincts unleash widespread destruction, thrusting Kiki and Lala into escalating challenges as caretakers. The narrative centers entirely on their shared struggle to contain the chaos sparked by Will's presence and behavior.