This game was never sold by itself but was always a subsidiary of different title.
It will record on the oldies of the MSXFAN November issue in 1991. It was developed as an object for the present of the laydock 2, and is 2 stages of length and vertically scrolling. A two-person simultaneous play is made and offensive strength upgrades with uniting.
The title is a complex story. Aapaa seems to be an old word for (silly|foolish|funny|comedy) and Myaa a Nagoya dialetct (T&ESoft's office is in Nagoya).
The game was also released by Project EGG: http://www.amusement-center.com/project/egg/cgi/ecatalog-detail.cgi?product_id=63 (With joystick support for 1 player game added.)