Kotobuki Tsumugi is depicted here wearing a cozy kigurumi that envelops her slender frame in soft, inviting fabrics. The sculpt emphasizes her gentle, round facial features, with large, bright eyes and a small, serene smile that captures her warm personality. Her long hair flows from under the hood, with subtle shading that hints at her natural pink-toned hue. The kigurumi may feature generous sleeves and a plush hood that adds a playful, childlike charm. Fine paintwork highlights tiny details: stitched seams along the cuffs, a delicate bow at the neckline, and a tiny zipper pull that accents the costume design. The pose is relaxed, suggesting a calm, friendly presence, and the overall silhouette conveys a cozy, approachable aesthetic. The base complements the character with soft colors and gentle gradients that evoke a gentle, comforting atmosphere, making this figure an inviting centerpiece for a display.

Kotobuki Tsumugi, often called Mugi, is the keyboardist in the light music club from K-ON!. Gentle, soft-spoken, and kindhearted, she brings warmth to the group with her tea-loving, sweets-adoring personality. Despite her shy nature, she forms strong friendships with her bandmates, offering support, cheerful conversations, and a dependable presence during rehearsals and performances. She has an earnest passion for music, a talent for playing keyboards, and a curiosity about the world that shines through in her conversations. In the story, Mugi's generous disposition and graceful demeanor help keep the band cohesive, even when nerves or fatigue threaten a new performance. She values friendship, comfort, and the joy of simple pleasures like sharing snacks and home-cooked meals with her friends, making her a beloved pillar of the K-ON! quartet, and her character often provides a heartwarming, relatable anchor for fans.