Karel
Karel is a swordmaster who owns a Wo Dao, a really good sword that only two others have. Not very good to have around, because he dies really fast. Not much is known about him, only that he has a sister named Karla, who is also a swordmaster. He wants to kill everybody so he can have a challenge, and I think he's a little...slow.
In Rekka no Ken, he is known as the Sword Demon. Because Fuuin no Tsurugi is a sequel, Keral was given time to change his ways, and he became known as the Sword Saint. Guy also uses the title.
Sister: Karla
Brother-in-Law: Bartre
Nephew: Fin
