Okay, so kasagake is like a game that samurai warriors used to play a long time ago in Japan. They would ride their horses really fast and try to hit these wooden targets with their swords. It was like a competition to see who could hit the most targets.
Now, in modern times, people still play kasagake as a way to preserve this old tradition. They use special targets that are made of foam or plastic, and they ride horses along a set course. Just like the samurai did, they try to hit the targets with their swords while on horseback.
It's a really cool way to learn about Japanese history and culture, and it's lots of fun to see the riders and horses going fast and hitting those targets!