Based on the title provided, this refers to the adult visual novel "Welcome to the Sexy Bar" developed by Kegani Labora.
If you are looking to "put together a good feature" for this version, consider focusing on these common community-requested additions: Interactive Mini-Games Welcome to the Sexy Bar -v1.6.0- -kegani labora...
Download or update via your usual channel (release page, package manager, or in-app updater). Follow the standard upgrade steps for your platform; no special migration should be necessary. Based on the title provided, this refers to