This is an “Ultrawing” stunt kite, identifiable by the name printed on the sail. Based on the structure, it’s a dual-line delta stunt kite, designed for acrobatic flying. Dual-line kites like this one are controlled by two lines, allowing you to maneuver the kite left and right, perform loops, and execute various tricks in the air. The bright pink and black color scheme, along with its delta shape, gives it visibility and aerodynamic performance for stunts.

Seems to be complete and in good condition except for sorting out the lines.