かたつむり？いいえコタツムリです。

anime style, high quality, cozy and humorous illustration, a relaxed girl lying on stomach with her eyes closed, upper body resting on a warm kotatsu table, the pose, lower body completely hidden under the blanket, mimicking a curled-up snail shape (kotatsumuri), peaceful expression, flushed cheeks, loose homewear or winter pajamas, a basket of bright orange mikan placed neatly on top of the kotatsu, soft warm lighting, gentle shadows, winter-themed indoor setting despite off-season, blanket edges slightly puffed, suggesting coziness and immobility, quiet atmosphere, soft focus, lighthearted and whimsical concept, cute and funny twist on "katatsumuri" (snail), attention-grabbing seasonal mismatch.