Summer Illusion of Steel (鋼鉄のサマーイリュージョン, Kōtetsu no Samā Iryūjon) is the third episode of the anime series Full Metal Panic? Fumoffu.
During a day at the beach, Kaname becomes upset at Sousuke's insensitivity. When she goes off alone, she is asked to have tea with a boy who is enamored with her. Sousuke, however, believes that she was kidnapped and proceeds to rescue her from her apparent kidnappers.