Meitantei Conan: Necchuushou no Nazo wo Toke!

The Detective Boys are playing football under the hot sun when Genta suddenly becomes weak and collapses. Conan and Haibara recognize the signs of heatstroke and move him into the shade, turning the frightening moment into a practical lesson for the whole group. They learn why heat can become dangerous, what warning signs to watch for, and how water, rest, cooling, and prevention can keep an ordinary summer game from becoming an emergency.