Ryuu to Chameleon

Garyo Hanagami is a best-selling manga artist praised as a genius of the craft. Shinobu Miyama is a bitter rookie with a knack for copying other people's art styles. When an accident causes the two to switch bodies, Miyama is more than happy to take Hanagami's place, forcing the veteran to rebuild his career from the ground up. Now, the dragon must reclaim his throne from the chameleon who replaced him!

(Source: Square Enix Manga & Books)