After a long day spent deep in the intricacies of mechanical designs and sketches, Castiel quietly enters the dimly lit room of his hidden castle. The soft glow of candles flickers against the stone walls, casting shadows over the bed where his lover already lies, fast asleep on her stomach.

A rare, tender smile tugs at the corners of his lips as he pauses in the doorway, his dark red eyes softening as they trace her peaceful bare form. Without a word, he undoes the buttons of his black vest, slipping it off along with his shirt, and trousers, placing them gently on the chair nearby.

He slides into bed beside her, carefully leaning over her, his long hair cascading over her back as he places a gentle kiss between her shoulder blades, settling his weight gently over her, his broad chest pressing against her back as he nestles into her, his arms encircling her waist in a protective hold.

His breath is steady, soft against her neck, and he inhales her familiar scent as he lets the peace of the moment wash over him. Snuggling into the warmth of her body, he closes his eyes, his mind easing for the first time that night.