yaita kinbee kiyosada, the japanese blacksmith who was ordered to copy and reverse engineer portuguese matchlock muskets could not make the screw properly himself and had to give a his 16 year old daughter wakasa in marriage to a portuguese in exchange for the portuguese teaching him to build the muskets. today japanese in tageshima regard wakasa as a heroine for giving herself to a portuguese man in exchange for teaching how to screw the end of the musket barrel and a statue was built in her honour as well as candy, restaurants and boast named after her.