Education
He graduated from Seijo Gakuen Junior High School and High School and Seijo University Faculty of Law.
及川 光博
He graduated from Seijo Gakuen Junior High School and High School and Seijo University Faculty of Law.
He is business partners with Horipro. Oikawa started as a stage theater actor through his band activities, and started his singing debut with the single, "Morality" on 1996. Since his debut, he had been the self-proclaimed "Prince", and on August 22, 1998 on Hitori no Big Show 98: Mamiya no Seisen he had a "Prince Career Change Declaration".
On 1998, Oikawa started as an actor and appeared on the drama, With Love.
On July 31, 2012, Oikawa announced a business partnership with Horipro. On July 6, 2015, Oikawa announced that he amicably terminated the contract of Mother Enterprise.
His future management business, including his acting activities were entrusted to Directorate General Agent, and continues his partnership with Horipro.