一筆 (“Hitofude” = Single Stroke) aka “Ippitsu” is a puzzle game by H.Hirabayashi.
Released in 1995, a decade before Mitchell Corp & Nintendo’s Polarium 直感ヒトフデ (“Chokkan Hitofude” = Intuitive Single Stroke) & Polarium Advance 通勤ヒトフデ (“Tsūkin Hitofude” = Commuting Single Stroke).
As huge fan of the Polarium games this discovery has rocked my world.
You can read about it in this 1997 feature at Vector and download it from its listing page. The author’s website is archived in the Wayback Machine. It will run on Windows 3.x and Windows 95, at least. I’m running here in English Windows 95 through DOSbox-x.