is a Japanese

Japanese people

The are an ethnic group originating in the Japanese archipelago and are the predominant ethnic group of Japan. Worldwide, approximately 130 million people are of Japanese descent; of these, approximately 127 million are residents of Japan. People of Japanese ancestry who live in other countries...

 guitarist who was born April 4, 1972 in Kanagawa Prefecture

Kanagawa Prefecture

is a prefecture located in the southern Kantō region of Japan. The capital is Yokohama. Kanagawa is part of the Greater Tokyo Area.-History:The prefecture has some archaeological sites going back to the Jōmon period...

, Japan

Japan

Japan is an island nation in East Asia. Located in the Pacific Ocean, it lies to the east of the Sea of Japan, China, North Korea, South Korea and Russia, stretching from the Sea of Okhotsk in the north to the East China Sea and Taiwan in the south...

. He was formerly a member of the amateur band pee-ka-boo, but he is mainly known for his work in the band Do As Infinity

Do As Infinity

Do As Infinity is a Japanese pop and rock band that formed in 1999 with three members: vocalist Tomiko Van, guitarist Ryo Owatari, and guitarist and composer Dai Nagao. The band's name is sometimes abbreviated as D.A.I., alluding to the fact that Do As Infinity was named after Dai Nagao...

 alongside Tomiko Van

Tomiko Van

, is a Japanese J-pop singer and occasional actress, as well as a member of the band Do As Infinity , along with Ryo Owatari and Dai Nagao, that has resumed activities after their 2005 split.- Beginnings as solo artist :...

 and Dai Nagao

Dai Nagao

is a Japanese composer, musician and producer. He was a member and composer of the popular musical group Do As Infinity from its founding until it disbanded in September 2005, although they have since reformed....

, that has resumed activities after their 2005 split. After the disbanding of Do As Infinity, he started working with his new band, Missile Innovation

Missile Innovation

is a Japanese rock band formed from the former member of Do As Infinity, Ryo Owatari. The other two members are twins and were also members with Ryo from their previous band, Pee-Ka-Boo...

. He is currently married to a Japanese Office Lady

Office lady

An office lady, often abbreviated OL , is a female office worker in Japan who performs generally pink collar tasks such as serving tea and secretarial or clerical work. Like many unmarried Japanese, OLs often live with their parents well into early adulthood...

 whose identity has been tightly concealed. He also has a son, but the family chooses not to disclose any information related him.

Ryo has also collaborated with some Avex label artists like Ai Otsuka

Ai Otsuka

is a Japanese pop singer-songwriter, composer, pianist and actress from Suminoe-ku, Osaka City, Osaka Prefecture, Japan. She is a popular artist on the Avex Trax label and is best known for her 2003 hit "Sakuranbo," which stayed in the Top 200 Oricon Weekly Singles Chart for 103 weeks.A piano...

 and Ayumi Hamasaki

Ayumi Hamasaki

is a Japanese singer-songwriter, record producer, model, lyricist, and actress. Also called "Ayu" by her fans, Hamasaki has been dubbed the "Empress of Pop" because of her popularity and widespread influence in Japan and throughout Asia. Born and raised in Fukuoka, she moved to Tokyo at fourteen to...

.