Love Live! Nijigasaki Gakuen School Idol Doukou Kai - Asaka Karin depicted as a bright, cheerful chibi-style figure with a dynamic pose that showcases her signature confident smile. The sculpt captures her pastel pink–brown hair tied into twin tails, with stray strands sculpted to convey motion and energy. She wears her stage costume from the Nijigasaki series, featuring a stylish blue and white top, a frilled skirt, and matching accessories with gold and pink accents. The paintwork highlights her emblematic school idol theme, including tiny ribbons, sparkling highlights on the shoes, and a tiny microphone prop. The surface finish looks glossy yet smooth, bringing a polished, collectible feel.

Asaka Karin is introduced in Love Live! Nijigasaki Gakuen School Idol Doukou Kai as a determined and versatile member of the Nijigasaki High's idol club. She balances a cool, reserved demeanor with bursts of energetic performance when the group needs a spark on stage. Karin often takes on leadership tasks during auditions and group activities, encouraging teammates with a mix of practical advice and warm humor. Her musical style blends pop melodies with light dance rhythms, reflecting her growth from a shy performer into a confident idol who can connect with fans during live events and school festivals.