In the world, Ryosen (Ryosen ) is an extremely rare unknown gender forename.
Abe, Nakajima, Yoshida, Hayashi, Kiri-Den, Nokami, Tanaka, Suzuki, Okura, Ishii, Kobayashi, Inoue, Nagao, Terai, Buhen, Maeda, Hino, Kato, Sato, Oki, Ono, Fujii, and Takahashi
) is an extremely rare unknown gender forename.