Create a serene scene in a minimalist bedroom featuring a character nestled under a cozy, fluffy duvet. The soft color palette should incorporate muted tones of beige and gray, evoking calmness. The character, with playful short hair, gazes contently over their shoulder, exuding tranquility. Emphasize the warm, inviting atmosphere, and include subtle details like crumpled pillows and a gentle light filtering through a window.