A powerful ninjutsu technique that conjures a massive wave of sticky, ink-like substance. The 3D model should feature a dynamic, flowing form with a glossy, dark purple-to-black gradient to mimic the ink's appearance. The surface should have a slightly uneven, liquid texture to suggest movement and viscosity, with subtle glowing accents to indicate chakra infusion. The wave's shape should be organic and asymmetrical, with tendril-like extensions at the edges to enhance its menacing look.