The game was originally created using Adobe Flash (often referred to as "Feel the Flash") and was developed by Sawatex. Version History:

Within the Kasumi Rebirth ecosystem, the numbers and 145 refer to two distinct, but interlinked, content packs:

Since you asked to "generate a piece," here is a short descriptive scene inspired by the game’s aesthetic:

Tip: Bookmark the page; the link automatically updates when new patches are released.