長光 Nagamitsu

What is Nagamitsu in Japanese Katana terminology?

Nagamitsu, also known as "Nagamitsu", was a swordsmith who succeeded as the second head of the Osafune school, the son of "Mitsutada", the founder of the Osafune school. He produced numerous famous swords, including his representative work "Daihannya Nagamitsu", and has left behind 6 national treasures and 28 important cultural properties.