I did not know how to describe HINAWAJUU in English, matchlock gun ? Old-fashioned Gun with match cord., introduced by Portugal in 1543 at Tanegashima Island, and copied by Japanese technicians to spread all over Japan immediately within 10 years and highly improved technically, which is really amazing in the world history. In those days, this shows how much highly advanced Japanese production skill and technology were. Anyway I have never heard matchlock gun shot . In TV or Movie, I heard its sound and smoke after shot, but it was my first time for me to hear real Matchlock gun shot singly or shot simultaneously with many guns. Its sound was so big as to be surprised than originally expected. In addition, much bigger OOZUTSU, Matchlock big Cannon was much more amazing with bigger sound and smoke after fired. Battlefield was re-demonstrated by many volunteers wearing armor and sword or long spear as Samurai worriers. Needless to say, there you could not find any real battlefield with blood, but you feel something scared when you heard such sound of matchlock gun fired. You can be invited to be time-slipped to the end of 16th century or early 17th century.