Hiroshi Nagai was born in Tokushima City in 1947.
After working as a graphic designer, he has been active as an illustrator since 1976.

Nagai draws tropical and clear landscapes represented by record jackets such as Eiichi Otaki's "A LONG VACATION" and "NIAGARA SONG BOOK."
Eiichi Otaki's album jacket "A LONG VACATION" won a gold disc as a special album jacket award from CBS Sony.
In September 2020, an exhibition of Nagai's works was held in Sydney, Australia.

Due to the worldwide popularity of "City Pop," especially in the 1980s, Nagai continues to actively hold exhibitions. He is known as a “music lover” and is also active as a DJ.