A minimalist black ink tattoo design on the upper shoulder…

A minimalist black ink tattoo design on the upper shoulder, symbolizing overthinking. The design features a small, abstract brain made of thin, continuous lines that morph into a subtle spiral or tangled knot, representing chaotic thoughts. The spiral extends slightly downward (2-3 cm) toward the upper arm, creating a see-through effect under a short-sleeve shirt. The style is clean, geometric, and delicate, with no shading or color, only fine lines and dotwork. The tattoo is small (5-7 cm in diameter), elegant, and follows the natural curve of the shoulder.