This joint game development project between ASCII MSX Magazine and the pop idol group Baby's was initiated by the Baby's member Juri on issue 1990-06 and was continued until 1990-12 but was not heard since. The game title was decided to Super Girl Legend Ciuda Dragón. Ciuda Dragón is fake Spanish for City of Dragon.
MSX Magazine 1990-11 page 130 describes the opening demo is in MSX Disk Communication 1990-11. However in reality it was canceled due to space concern.
MSX Magazine 1990-10 solicited for MuSICA data from its subscribers and some of them are listenable from MSX Disk Communication 1990-12 disk 1. One of the musicians (YMD)A later reused his contributions for SNES SM Choukyoushi Hitomi Vol. 3.
Minami-Aoyama was the place name of the ASCII's address. The project name might be influenced by ASCII's 1983 text adventure Minami-Aoyama Adventure: http://akky.in.coocan.jp/060628.html