魔法使いの妹子 © 1986 Tsukumo Denki.
(Mahoutsukai no Denshi)
Released in May 1986 in Japan. Originally released as a doujin software in 1985 by Teikoku Soft.
This software is one of the first to realize a hybrid design that supports both PC-8801 and FM-7 models on a single floppy disk.
Game's Floppy Disk.