This short article is in need of work. You can help Sonic Retro by adding to it.
Nakayoshi Chao! (なかよしチャオ！), also known as Nakayoshi Chao, is a mobile phone game released as part of the Sonic Cafe service offered by Sega. In this game, you can raise a Chao as a virtual pet - stroke it, talk to it, and download wallpaper from the network, amongst other things.