Masayoshi Oishi (オーイシマサヨシ)

Masayoshi Oishi, known on stage as Oishi Masayoshi (オーイシマサヨシ), is a Japanese singer-songwriter from Uwajima, Japan. Born on January 5, 1980, under his real name 大石昌良, he works in J-pop and singer-songwriter styles and is associated with Space Shower Music. His official website is 014014.jp. Oishi is also closely tied to Japan's anime song scene through major live events and public appearances. In 2026, he released the music video for "Kimi wa Koibito" and was announced for ANIMAX MUSIX 2026 in Yokohama Arena, while also appearing in coverage related to Animelo Summer Live 2026. That mix of pop songwriting, solo performance, and anison-stage visibility is central to his profile.