If you're looking for anime similar to Chameleon, you might like these titles.
The official music video for Arigatou: Kokoro no Bara by Mike Maki that was featured on NHK's Minna no Uta program.
The official music video for Kanashiki Mongoose by Seiji Tanaka that was featured on NHK's Minna no Uta program.
The official music video for Aki Monogatari by Kiyohiko Ozaki that was featured on NHK's Minna no Uta program.