There are a number of martial arts in addition to aikido which appear, or claim, to be descended from the art of Daitō-ryū or the teachings of Takeda Sōkaku. Among them are: the Korean martial art of hapkido founded by Choi Yong-sool, who claims to have been trained under Takeda Sokaku; Choi gave two versions of his story, one in 1962 and another completely different one in 1982. Hakkō-ryū founded by Okuyama Yoshiharu, who trained under Takeda Sokaku; and Shorinji Kempo, founded by Nakano Michiomi (later known as So Doshin), who is known to have trained under Okuyama. Additionally, Icho-ryū – an offshoot designed for police defense is practiced widely in Washington state. Many techniques from Hakko-ryu are similar to the techniques of Daitō-ryu. Certain styles of Karate also use joint manipulation and locking techniques. Richard Kim (karate) studied under Kotaro Yoshida, a student of Takeda, and introduced techniques from Aiki-jujutsu to his Karate students.