In the late-night train carriage, a penguin plush toy wearing headphones leans against a brown-orange patterned seat, quietly gazing out at the pitch-black window. Blue star stickers decorate the upper part of the cream-colored carriage wall, with vents, surveillance signs, and a subway map along the side. The warm yellow light envelops the entire retro space, creating a tranquil yet slightly lonely travel atmosphere, as if the toy is lost in music all by itself.