Technopolis Soft was the software label of publishing house Tokuma's computer gaming magazine Technopolis (known as "Tekupori" for short). After the Famicom became a big hit, the average Japanese games player quickly transitioned to consoles, leaving computers with more "adult" genres. Technopolis followed suite, and became more and more adult-oriented, to the point where they actually trademarked the term "bishōjo games". Their software department followed a similar path.
Kotensoft