Grab tickets to see a game at Shiokaze Arena. If there's nothing scheduled while you're in the area, you might like to check if there's a guided tour of the facilities.
You'll soon find out why this Miura sporting facility is visited by many travelers. If you're searching for other things to keep you busy, Soleil Nooka Park, Miura Kaingan Beach, and Jogashima Park are in the area as well. They won't take you long to get to from Shiokaze Arena.