It's a curved sword of single-edged.
Doujigiriyasutuna
It is said to cut off the neck of Japanese Demon (Oni)
In Edo period, the master of trial cutting cut off the six corpses of criminals and chunky wooden foundation at a time using Doujigiriyasutuna.
Masamune
Masamune is one of the most famous Japanese Katana. In Kamakura period master craftsmen have created, Masamune.Masamune is the name who created these Katana.
Onikirimaru
Notsuna Watanabe defeated the demon of Rashomon at this sword.
It was the sword treasured in the Genji Family.
Shishimaru
Since defeating Nue troubled capital, It was given to Minamoto no Yorimasa.