At 1982 or 1983, SystemSoft published a monster game called Battle of the Coral Sea, also maybe the fisrt disk version simulation game before Daisenryaku, with 3 floopy disks (2 of them are the data of map and military) and boardgame components on PC8801/PC8001. Here’s the photo of its creator, 一零, at his home office, the Operation Board on his hand.
In the game manual, the creator promised there would present a Easy/Normal/Hard level scenario AI, but it never happened, and no open information about his later career after the game failed.
A mystery man at his office.
And another tale, because the big failure of this game, SystemSoft staff got a big resistance for persuading management to release the wargame Daisenryaku.