Kitagawa Marin stands confidently in a glossy swimsuit, her long chestnut hair styled in a playful, wind-swept manner that frames her bright eyes. The Swimsuit Ver. captures Marin with a flattering, form-fitting one-piece in a vibrant color scheme that contrasts with her pale skin tone. Delicate sculpting highlights her slender waist and the subtle curvature of her hips, while tiny sculpted creases and wrinkles on the fabric convey realism. The figure includes a relaxed pose, one hand poised near her hip and the other resting at her side, supported by a sculpted base that evokes a sunlit poolside vibe. The overall finish emphasizes Marin's cheerful personality and fan-favorite cosplay charm.

Kitagawa Marin is a high school girl who loves cosplay and anime, balancing school life with her passionate hobby. She dreams of recreating beloved characters and often shares her enthusiasm through elaborate outfits. When she befriends Wakana Gojo, a quiet classmate who makes hina dolls, he becomes a patient mentor who helps her improve sewing, makeup, and prop construction. Marin's determination, creativity, and warmth shine as she learns to express herself through costumes while navigating social judgments about cosplay. The series follows their evolving friendship and creative collaborations, highlighting trust, open communication, and the thrill of turning imagined characters into tangible, living performances. It is a story about growth, acceptance, and the joy of shared artistry.